I stayed in the London room for one night during my stay in SF. I had a great experience here. The room and bathroom were both very clean. The room was spacious as well. There was a shared mini-fridge that was very convenient. Additionally, this location was great to explore Haight-Ashbury and the surrounding areas just outside of the city center. There were also a lot of local shops for quick grab-and-go bites.
While I had no trouble with my room, travelers should keep in mind that the London room specifically faces the street. This mean that during the morning and evening, it may get a little noisy from cars going up and down the block. Additionally, the porch light stayed on late and the light shinned into the room which may be bothersome for some.