M Social Hotel Sunnyvale Takes Bookings Ahead of December Opening in Silicon Valley

October 16, 2026 — Millennium Hotels and Resorts will open M Social Hotel Sunnyvale in December. The 263-room hotel in the heart of Silicon Valley is already taking reservations and is built around technology, with mobile keys, self-check-in kiosks, robot helpers and an in-room AI assistant.

What is happening

M Social Hotel Sunnyvale is a new-build hotel from Millennium Hotels and Resorts’ M Social lifestyle brand. It sits in a mixed-use development beside the city’s man-made lake, close to Highway 101, and is set to open in December 2026 (exact day TBA). Reservations are open now for stays from December. The announcement did not name the owner.

Detail	M Social Hotel Sunnyvale
Opening	December 2026 (day TBA); bookings open
Rooms	263 rooms and suites for business, extended-stay and leisure guests
Dining	Beast & Butterflies restaurant; ctrl+B(ar) for coffee, cocktails and California wines; Byte+Hub Market grab-and-go
Tech	Mobile room keys, self-service kiosks, robotic service assistants, “Aiello” in-room AI assistant
Meetings	About 28,000 sq ft indoor and outdoor, including the 6,600-sq-ft Quantum Ballroom
Other	Built to LEED Gold standards; rooftop beehive; communal spaces instead of a formal lobby
Nearest airport (per release)	San José Mineta International (SJC)

What it means for travelers

Airport: The release names San José Mineta International (SJC) as the nearby airport, which suits a quick Silicon Valley trip.
New-hotel timing: The opening day has not been announced. If you book an early-December stay, keep it flexible in case the date moves.
Self-service check-in: Check-in runs mostly through kiosks and mobile keys, which helps if you arrive late after a delayed or missed flight.