About the Hotel

Hilton San Francisco Union Square is conveniently located near Union Square . Ecape to paradise and let Hilton provide a rejuvenating, recharging, safe and relaxing getaway.
 
Cancellation Deadline: 3 days prior to arrival to avoid a cancellation fee
Check-in / Check-out: 15:00 / 11:00
Phone: +1 415.771.1400

Explore Union Square

Just steps from your hotel, Union Square is San Francisco’s vibrant hub for shopping, dining, and culture. From iconic department stores to local art galleries and historic theaters, there’s something for everyone.

Learn more about how the Union Square Alliance is working to keep the district welcoming, clean and thriving for visitors and businesses alike.

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.