Not easy to find negative sides about the appartment or the host! We were two French couples and made a short stay at Tim´s place In October 2013. What a treat! We arrived from the airport with delay and tired with jetlag and were welcomed by Tim, very friendly, trustworthy and prompt to answer our text messages. He did made our arrival smooth and easy. The appartment is really spacious and clean, the beds are super comfy, it has a cute small backyard for smokers and a range of complimentary snacks and drinks for guests. The 2 bedrooms are equally nice. The building itself is charming and the location is ideal: you can easily go downtown with the direct tramway at the corner of the street, or sunbathe at the Mission Dolores Park or enjoy the bustling neighborhood of Castro. The parking place is convenient and safe.
If you hesitate, I would definitely encourage you to go for it !