Exhibit 3.188

[Hilton Worldwide Letterhead]

Hilton Worldwide, Inc.

Amended and Restated Bylaws

Adopted March 14, 2012

ARTICLE I

MEETINGS OF STOCKHOLDERS

Section 1. Place of Meeting and Notice. Meetings of the stockholders of Hilton Worldwide, Inc. ( the “Corporation”) shall be held at such place either within or without the State of Delaware as the Board of Directors may determine.

Section 2. Annual and Special Meetings. Annual meetings of stockholders shall be held, at a date, time and place fixed by the Board of Directors and stated in the notice of meeting, to elect a Board of Directors and to transact such other business as may properly come before the meeting. Special meetings of the stockholders may be called by the Chairman of the Board or the Board of Directors pursuant to a resolution approved by a majority of the entire Board of Directors. Special meetings may be held on such date, time and place as the Chairman of the Board or the Board of Director shall direct.

Section 3. Notice. Except as otherwise provided by law, at least 10 and not more than 60 days before each meeting of stockholders, written notice of the time, date and place of the meeting, and, in the case of a special meeting, the purpose or purposes for which the meeting is called, shall be given to each stockholder. Without limiting the manner by which notice otherwise may be given to stockholders, any notice shall be effective if given by a form of electronic transmission consented to (in a manner consistent with the Delaware General Corporation Law) by the stockholder when the notice is given.

Section 4. Quorum. At any meeting of stockholders, the holders of record, present in person or by proxy, of a majority of the Corporation’s issued and outstanding capital stock shall constitute a quorum for the transaction of business, except as otherwise provided by law. In the absence of a quorum, any officer entitled to preside at or to act as secretary of the meeting shall have power to adjourn the meeting from time to time until a quorum is present.

Section 5. Voting. Except as otherwise provided by law, all matters submitted to a meeting of stockholders shall be decided by affirmative vote of a majority of the Corporation’s issued and outstanding capital stock present in person or by proxy.

Section 6. Action By Written Consent of Stockholders. Unless otherwise restricted by the certificate of incorporation, any action required or permitted to be taken at any annual or special meeting of the stockholders may be taken without a meeting, without prior notice and without a vote, if a consent or consents in writing, setting forth the action so taken, shall be signed by the holders of outstanding stock having not less than the minimum number of votes that would be necessary to authorize or take such action at a meeting at which all shares entitled to vote thereon were present and voted and shall be delivered to the Corporation by delivery to its registered office in the State of Delaware, its principal place of business, or an officer or agent of the Corporation having custody of the book in which minutes of proceedings of stockholders are recorded. Prompt notice of the taking of the corporate action without a meeting by less than unanimous written consent shall, to the extent required by law, be given to those stockholders who have not consented in writing and who, if the action had been taken at a meeting, would have been entitled to notice of the meeting if the record date for such meeting had been the date that written consents signed by a sufficient number of holders to take the action were delivered to the Corporation.

ARTICLE II

DIRECTORS

Section 1. Number, Election and Removal of Directors. The number of Directors that shall constitute the Board of Directors shall not be less than three or more than fifteen as determined by the Board of Directors or the stockholders. Each Director shall hold office for a term of one year or until his or her successor is duly elected and qualified, subject to such Director’s earlier death, resignation or removal. Vacancies and newly created directorships resulting from any increase in the number of Directors may be filled by a majority of the Directors then in office, although less than a quorum, or by the sole remaining Director or by the stockholders. A Director may be removed with or without cause by the stockholders.

Section 2. Meetings. Regular meetings of the Board of Directors shall be held at such times and places as may from time to time be fixed by the Board of Directors or as may be specified in a notice of meeting. Special meetings of the Board of Directors may be held at such times and places whenever called by the Chairman of the Board, the President or by two or more members of the Board of Directors. Notice of a special meeting of the Board of Directors shall be given by the person or persons calling the meeting at least twenty-four hours before the special meeting.

Section 3. Quorum. A majority of the total number of Directors shall constitute a quorum for the transaction of business. If a quorum is not present at any meeting of the Board of Directors, the Directors present may adjourn the meeting from time to time, without notice other than announcement at the meeting, until such a quorum is present. Except as otherwise provided by law, the Certificate of Incorporation of the Corporation or these Bylaws, the act of a majority of the Directors present at any meeting at which there is a quorum shall be the act of the Board of Directors.

Section 4. Committees. The Board of Directors may, by resolution adopted by a majority of the whole Board, designate one or more committees, including, without limitation, an Executive Committee, to have and exercise such power and authority as the Board of Directors shall specify. In the absence or disqualification of a member of a committee, the member or members thereof present at any meeting and not disqualified from voting, whether or not he or she or they constitute a quorum, may unanimously appoint another Director to act as the absent or disqualified member.

Section 5. Telephonic Meetings Permitted. Members of the Board of Directors, or any committee designated by the Board of Directors, may participate in a meeting thereof by means of conference telephone or other communications equipment by means of which all persons participating in the meeting can hear each other, and participation in a meeting pursuant to this by-law shall constitute presence in person at such meeting.

Section 6. Organization. Meetings of the Board of Directors shall be presided over by the Chairman of the Board, if any, or in his absence by the Vice Chairman of the Board, if any, or in his absence by the President, or in their absence by a chairman chosen at the meeting. The Secretary shall act as secretary of the meeting, but in his or her absence the chairman of the meeting may appoint any person to act as secretary of the meeting.

Section 7. Action by Unanimous Consent of Directors. Unless otherwise restricted by the certificate of incorporation or these Bylaws, any action required or permitted to be taken at any meeting of the Board of Directors, or of any committee thereof, may be taken without a meeting if all members of the Board of Directors or such committee entitled to vote thereon, as the case may be, consent thereto in accordance with applicable law.

ARTICLE III

OFFICERS

The officers of the Corporation shall consist of such officers with such titles as the Board of Directors shall determine, all of which shall be chosen by and shall serve at the pleasure of the Board

2

of Directors. Such officers shall have the usual powers and shall perform all the usual duties incident to their respective offices. All officers shall be subject to the supervision and direction of the Board of Directors. The authority, duties or responsibilities of any officer of the Corporation may be suspended by the Board of Directors with or without cause. Any officer elected or appointed by the Board of Directors may be removed by the Board of Directors with or without cause. Each officer, subject at all times to these Bylaws and to the direction and control of the Board of Directors, shall have and may exercise, in addition to the duties and powers specifically set forth in these Bylaws, such duties and powers as are prescribed by law, commonly incident to his or her office or as the Board of Directors may from time to time prescribe.

ARTICLE IV

SEAL

The corporate seal shall have inscribed thereon the name of the Corporation and the words “Corporate Seal, Delaware 1946”. Said seal may be used by causing it or a facsimile thereof to be impressed or affixed or reproduced or otherwise.

ARTICLE V

SHARE CERTIFICATES

Each stockholder shall be entitled to, upon request to the Secretary, a certificate or certificates which shall represent and certify the number and class of capital stock owned by such stockholder in the Corporation. In all other cases certificates will not be issued. Each certificate shall be signed by the Chairman of the Board or the President or a Vice President and countersigned by the Secretary or an Assistant Secretary or the Treasurer or an Assistant Treasurer.

The signatures on any certificates may be either manual or facsimile signatures and the Seal may be either facsimile or any other form of Seal. In the case any officer who has signed any certificate ceases to be an officer of the Corporation before the certificate is issued, the certificate may nevertheless be issued by the Corporation with the same effect as if the officer had not ceased to be such officer as of the date of its issue. Each share certificate shall include on its face the name of the Corporation, the name of the stockholder and the class of shares and number of shares represented by the certificate.

The Corporation may issue a new certificate of stock in place of any certificate or certificates theretofore issued by the Corporation alleged to have been lost, stolen or destroyed upon the making of an affidavit of that fact by the person claiming the certificate of stock to be lost, stolen or destroyed. The Corporation may require the owner of the lost, stolen or destroyed certificate, or such owner’s legal representative, to give the Corporation a bond sufficient to indemnify the Corporation against any claim that may be made against the Corporation on account of the alleged loss, theft or destruction of any such certificate or the issuance of such new certificate.

ARTICLE VI

INDEMNIFICATION

The Corporation shall indemnify to the fullest extent permitted by law any person made or threatened to be made a party to any action, suit or proceeding, whether civil, criminal, administrative or investigative, by reason of the fact that such person or such person’s testator or intestate is or was a director or officer of the Corporation or serves or served, at the request of the Corporation, any other enterprise as a director or officer (all such persons being referred to hereafter as an “Indemnitee”). Expenses, including attorneys’ fees, incurred by an Indemnitee in defending any such action, suit or proceeding shall be paid or reimbursed by the Corporation promptly after a request therefor and upon receipt by the Corporation of an undertaking of such Indemnitee to repay such expenses if it shall ultimately be determined that such person is not entitled to be indemnified by the Corporation. The rights provided to an Indemnitee by this Section shall be enforceable against the Corporation by such person who shall be presumed to have relied upon it in serving or continuing to serve as a director or officer as provided above. For purposes

3

of this Section, the term “other enterprise” shall include any corporation, partnership, limited liability company, joint venture, trust, association or other unincorporated organization or other entity or employee benefit plan; service “at the request of the Corporation” shall include service as a director or officer of the Corporation which imposes duties on, or involves services by, such director or officer with respect to an employee benefit plan, its participants or beneficiaries; any excise taxes assessed on a person with respect to an employee benefit plan shall be deemed to be indemnifiable expenses; and action by a person with respect to an employee benefit plan which such person reasonably believes to be in the interest of the participants and beneficiaries of such plan shall be deemed to be action not opposed to the best interests of the Corporation. No amendment, termination or repeal of this Article or of the relevant provisions of the Delaware General Corporation Law or any other applicable laws shall affect or diminish in any way the rights of an Indemnitee to indemnification under the provisions hereof with respect to any actions, suit, proceeding or investigation arising out of or related to any actions, transactions or facts occurring prior to the final adjudication of such amendment, termination or repeal.

The indemnification and advancement of expenses provided by, or granted pursuant to, this Section shall not be deemed exclusive of, and shall not affect, any other rights to which those seeking indemnification or advancement of expenses may be entitled under any law, by-law, charter provision, agreement, vote of stockholders or disinterested Directors or otherwise, both as to action in such person’s official capacity and as to action in another capacity while holding such office, and shall continue as to a person who ceased to be a director or officer and shall inure to the benefit of the heirs, executors and administrators of such person.

ARTICLE VII

GENERAL PROVISIONS

Section 1. Notices. Whenever any statute, the Certificate of Incorporation or these Bylaws require notice to be given to any Director or stockholder, such notice may be given in writing by mail, addressed to such Director or stockholder at his address as it appears in the records of the Corporation, with postage thereon prepaid. Such notice shall be deemed to have been given when it is deposited in the United States mail. Notice to Directors may also be given by telecopier, telephone or other means of electronic transmission.

Section 2. Fiscal Year. The fiscal year of the Corporation shall begin the first day of January in each year.

Section 3. Waiver of Notice of Meetings of Stockholders, Directors and Committees. Any waiver of notice, given by the person entitled to notice, whether before or after the time stated therein, shall be deemed equivalent to notice. Attendance of a person at a meeting shall constitute a waiver of notice of such meeting, except when the person attends a meeting for the express purpose of objecting, at the beginning of the meeting, to the transaction of any business because the meeting is not lawfully called or convened. Neither the business to be transacted at nor the purpose of any regular or special meeting of the stockholders, directors, or members of a committee of directors need be specified in a waiver of notice.

Section 4. Form of Records. Any records maintained by the corporation in the regular course of its business, including its stock ledger, books of account, and minute books, may be kept on, or by means of, or be in the form of, any information storage device or method, provided that the records so kept can be converted into clearly legible paper form within a reasonable time.

Section 5. Amendment of Bylaws. These Bylaws may be altered, amended or repealed, and new bylaws made, by the Board of Directors, but the stockholders may make additional bylaws and may alter and repeal any bylaws whether adopted by them or otherwise.

4