The Opera Inn was a good place to stay, close to SF downtown and very comfortable. Rooms are cleaned everyday, same as in a hotel, and the staff is friendly and helpful.
The only downside was the room I was assigned: it was on top of the hotel restaurant, so while the restaurant was open you could hear ambient music constantly.
I usually left the room early in the morning and came back late at night, so it wasn’t too bad.
Overall I had a very pleasant stay, I would totally come back