I stayed here while attending a conference at the convention center, which is within walking distance. The location is great for accessing both Gaslamp and convention center; it really made it possible to "do it all" without needing a car. The couch and bunk beds were very comfortable, and extra blankets are available in the apartment if you need them. Check in and check out were very easy, and the host was very communicative and helpful when I reached out. The host was also respectful of guests' needs for quiet, security, and privacy within the building. Definitely a great value! I'd recommend this place to anyone staying in Gaslamp Quarter!
In terms of accessibility: I was unsure if there was an elevator in the building, but the front stairway as you enter the building has a sturdy bannister to help guests get up the stairs, and the apartment I stayed in was very spacious (both plusses). However, there was a step up to get into the bathroom. The overhead lights in the sleeping, living room, and kitchen areas are adjustable, as are the fans. There is also a very large TV to which you can easily cast your phone. The parking is limited in this neighborhood, but do talk to the host before you book; they can offer really helpful suggestions and resources.