History Updated
Ondine, Ditas and ERIA: A Guide to the Upstairs Space
If you remember Ondine or Ditas, you are remembering the upstairs chapter of this waterfront building. ERIA identifies its upstairs Sausalito space at 562 Bridgeway, while the historic Trident ground floor is at 558 Bridgeway. Confirm the exact floor when making plans.

The names associated with upstairs
NorthBay biz reported in December 2023 that Ditas had opened that May in the upstairs space previously occupied by Ondine. Subsequent reporting described the transition from Ditas to ERIA. These names describe business chapters in an upstairs setting, rather than a succession of names for the downstairs Trident restaurant.
For current ERIA arrangements, use our venue and contact pages. Historical restaurant reviews can provide context, but they do not establish current menus, opening hours, rental inclusions or availability.
Why the floor matters as much as the address
A guest who recognizes the exterior may still arrive at the wrong entrance. Invitations should name ERIA, identify the floor and include the arrival instructions supplied for that event. Vendors need the load-in instructions as well, rather than simply the guest address.
If you are considering both floors for a celebration, ask how arrivals, meals, speeches and departures would be managed. Treat a full-property arrangement as a distinct booking with its own scope, access plan and written confirmation.
- Upstairs: ERIA Sausalito, 562 Bridgeway.
- Ground floor: ERIA Sausalito Ground Floor, 558 Bridgeway.
- For any booking: confirm the entrance, rooms included, current access arrangements and vendor schedule.
Look at the space as it will work for your event
Compare a room photograph with a proposed layout. A clear room, a seated dinner and a reception with a stage can feel very different. Ask where guests will enter, where coats and bags will go, and how catering service will move through the room.
Share any mobility requirements before choosing a floor. Do not infer step-free access from a photograph of a doorway or terrace. A useful viewing follows the actual guest route from arrival through the event and back out again.
Common questions
Was Ditas upstairs from the Trident?
Yes. Contemporary reporting places Ditas in the upstairs former Ondine space. The Trident restaurant was the separate ground-floor operation.
Should I write 558 or 562 Bridgeway on an invitation?
Use the address and entrance instructions for the floor confirmed in your booking. ERIA identifies upstairs as 562 Bridgeway and the ground floor as 558 Bridgeway.
Can I use an old Ondine layout to plan an ERIA event?
Use a current floor plan and the layout approved for your event. An old plan or photograph may not reflect present furniture, access or event arrangements.
Sources & further reading
Updated
Continue exploring

History
The History of 558 Bridgeway on the Sausalito Waterfront
A guide to the historic San Francisco Yacht Club building at 558 Bridgeway, its restaurant chapters, and how to explore the history responsibly.

Visiting
Is the Trident in Sausalito Still Open?
The Trident restaurant's closure, its connection to ERIA, and how to check current event availability at 558 and 562 Bridgeway.

Planning
How to Choose a Waterfront Event Space in Sausalito
A practical comparison guide for Sausalito event spaces: usable views, floor plans, weather backup, inclusions, guest access and complete budgets.