Check-in went smoothly, and the staff were all very friendly. The room was accurately described, clean, and well-decorated. The bed was comfortable. I would just advise potential guests that the location was VERY loud on the weekend nights, throughout the entire night. That said, Sonder provided earplugs that helped a great deal, and the weeknights were much quieter.
The location is about a 15-20 minute walk from the San Diego convention center.