I lived for nearly 4 months at Leons place. It was a great stay. Leon was exceptionally hospitable and was always very helpful. It was perfectly clean and everything was as described. Also Leon is a great cook!
If you're looking for a reasonably priced private bedroom and bathroom, look no further. Bart station is in 15 minute walking distance, but the bus station is in front of the house. So the comute to San Francisco is very convenient!