Great place! I would totally stay here again. The self-checkin process was easy. After entering you have to walk through an art studio to get to the room. The room itself was very clean, cozy and pleasantly decorated. It has a little kitchenette for all your basic needs (e.g. mini-fridge, microwave, utensils, etc.). It was a little cold when I got there (it was winter in SF), but the little space heater definitely does a good enough job once you turn it on. The bed was very comfy. The bathroom was quite nice as well; the shower had plenty of hot water and adequate water pressure.
Sylvia herself was very generous and probably one of the most hospitable AirBnb hosts I've had. I got in a little late and she offer some baked chicken she just made because I had not had anything to eat yet. She also set some fresh cookies in front of my door the following morning. She was also full of suggestions of things to do in the area. And speaking of the area, in my perspective, it is hard to get a better location in SF. It is a block away from all the Land's End trails, its quiet, and short walking distance to the beach and restaurants.