Silicon Valley's Grand Hotel Sunnyvale Announces $25 Million Dollar Addition 60,000 Sq. Ft. Annex Features 51 New Rooms, 2 Meeting Spaces & More, Opening June 2021 News provided by Share this article Share this article SUNNYVALE, Calif., Jan. 6, 2021 /PRNewswire/ -- The Grand Hotel Sunnyvale, Silicon Valley's #1 boutique hotel on TripAdvisor, announces its upcoming $25 million dollar annex will be completed June 1, 2021. A 60,000 sq. ft. addition will span 4 floors with 51 new rooms, two state-of-the-art meeting spaces, and a new gym. In total, the hotel will offer 155 rooms and private vill...