About the Hotel

Hilton San Francisco Union Square
 333 O'Farrell St, San Francisco, California 94102
Telephone: +1 415.771.1400
 
Reservation Deadline: 01 May 2025
Cancellation Deadline: 3 days prior to arrival to avoid a cancellation fee
Check-in / Check-out: 15:00 / 11:00

Near Union Square — Escape to paradise. Let Hilton provide a rejuvenating, recharging, safe and relaxing getaway.

Top-Quality Rooms at Discounted Rates

Optica works with our hotel and travel partners to bring you affordable rates at top-quality venues. We negotiate exclusive room discounts to help you save money on your trip. And, by staying at the meeting venue, you can extend your networking opportunities beyond the session rooms — taking advantage of informal interactions in venue spaces. 

In addition, when you reserve a room through our partners, you help Optica keep meeting costs as low as possible.

An Important Notice About Housing Scams

Phone, fax or email communications from any other company or organization offering cut-rate housing for an Optica event or stating that they are a viable alternative to going through the official housing bureau, are not affiliated with the meeting in any manner.

While it is not illegal for a travel firm or booking agent to solicit potential customers, it can be difficult to determine the legitimacy of offers from these organizations. Those who opt for alternatives to the official negotiated rates may find themselves at risk. Other groups report that after paying these types of companies, no room was reserved and their credit card was fraudulently charged.

For these reasons, and to support our efforts to give you a quality event, we highly recommend that you do not make any reservations through any unknown housing or travel company. Again, Optica has no affiliation with these room brokers.

Please report any unauthorized housing solicitations to Customer Service at cstech@optica.org.