First of all, Craig is a wonderfully open person. I suggest you get him talking when you have time to spare! As for the space, it's a truly beautiful one. The aesthetics of the house are gorgeous - many fixtures are original pieces, and the renovation of the house itself has clearly been a success. I didn't experience any issues with the amenities, and thanks to Craig's thorough instructions, I had no problems getting to the place either.
I stayed in room 3, which is exactly as I expected it to be from the online photos (A rarity!); if you're an early sleeper, be mindful of the traffic noise outside; the room is at the front of the house, facing a road, and is a couple of metres from a busy intersection. This didn't bother me, and was easy to get used to coming from another big city, but if it does you, you may want to consider ear plugs. Overall though, I'd thoroughly recommend staying here. It's comfortable, easy to locate thanks to the myriad of transportation systems in place in SF, and has a gracious host. What more could you ask for?