Exhibit A

Agreement as to Joint Filing of Schedule 13D

Dated: March 24, 2017

The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to this statement shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that it knows or has reason to believe that such information is inaccurate.

This Agreement may be executed in counterparts and each of such counterparts taken together shall constitute one and the same instrument.

HNA Group Co., Ltd.
	By:	/s/ TAN Xiangdong
	Name:	TAN Xiangdong
	Title:	Chief Executive Officer
HNA Tourism Group Co., Ltd.
	By:	/s/ ZHANG Ling
	Name:	ZHANG Ling
	Title:	Chairman of the Board of Directors
HNA Tourism (HK) Group Co., Ltd.
	By:	/s/ GUO Yajun
	Name:	GUO Yajun
	Title:	Director
HNA HLT Holdco III Limited
	By:	/s/ WANG Xun
	Name:	WANG Xun
	Title:	Director
HNA HLT Holdco II LLC
	By:	/s/ WANG Xun
	Name:	WANG Xun
	Title:	Manager
HNA HLT Holdco I LLC
	By:	/s/ WANG Xun
	Name:	WANG Xun
	Title:	Manager