I had a wonderful stay at KR's. The property is situated in a quiet neighborhood in east San Diego, not far from SDSU. The room and bathroom are private and cozy. The back patio is really nice in the mornings when you're having your breakfast (the little black lizards running around in the yard are great entertainment, too).
KR is very warm, friendly, and wonderful to speak with (she has quite a varied and interesting back story, if you should get the chance to chat). I enjoyed her two little pups, Mikey & lil' Bits. They were very friendly, too (especially once they knew you came with treats).
If you're looking for a longterm stay, I highly recommend this place. It's a great value and wonderful experience.