Carl was a great host. Although I stayed for one night and did not meet him, he was always prompt with communicating with me. He left very thorough instructions to get into the apartment and a very thorough guide of places to eat and see in the area. The house itself is very nice and is exactly as pictured. The area is also very safe and has tons of restaurants and bars to visit. For the price, you can't beat his place. Would stay again next time I visit San Fran.