Annie's home is an excellent place with great value for a longer-term room in San Francisco. The room is extremely spacious and private with a nice bed and full bath. I'll definitely be back if I need a long-term place to stay!
Location wise, it's in a quiet area with easy access into downtown (either by the 14R/14X express buses that stop just a few steps away, or by BART which is a <20 min walk).
Annie was very responsive to emails and was a great host, leaving water and fruit for me when I arrived. There's also a microwave/toaster/hot plate/kettle available if you ever need them.
The only potential downside is the walls were a bit thin so you could hear noise from adjoining rooms, but that's the only minor quibble I can think of.