By far the best place in downtown you can stay!! I really enjoyed my time at Steven's place. I stayed here long term because my condo had a pipe burst and I had no running water. So I was looking for a "home away from home" while repairs were getting done. Steven's place blew my expectations away. There was everything you needed to cook, shower, watch TV, go to the beach, etc. He clearly has a-lot of experience and has thought about anything you could want to do in SD.
I am also a single female in my 20's and really appreciated the super clear instructions, self check in/ out, and that I had everything I needed upon arrival. It is also in a gated community in a quiet section of the city. I felt completely safe the entire time. Would recommend to anyone in the same situation :)