The secret lounge is a great stopover in San Francisco. The studio is exactly as described, very comfortable and well furnished. What we especially loved was the light, which is amazing all day long in the studio. Everything worked perfectly and was well-explained to us by our hosts (email).
And of course, one of the most exciting thing about the place is its location, the neighborhood is just great, walking distance to very nice restaurants and dives. Next to the bart station which goes to the embarcadero, chinatown and Powell (great place to shop!). All in all the perfect place to get a real taste of SF. In spite of the very lively and entertaining surroundings, the street itself is silent and we slept really well. Best of both worlds, really.
We will definitely go back to the secret lounge whenever we come back to SF!