I stayed here with my family - 4 adults - for a week. The house is close to all major attractions and many bus/muni routes.
The apartment, which we found really clean, is large and spacious, quite bright, with two bathrooms and very comfortable beds. Even my elderly parents, who are not used to traveling in the BNBs, found the accommodation very pleasant.
The kitchen corner with fridge, microwave, stove and coffee maker allowed us to warm up some dishes and have breakfast at home: eating every day at restaurants in San Francisco can be challenging. Our Host Vannida took great care to provide us with fresh fruit, orange juice, yoghurt and everything we needed to have breakfast during the week.
Opposite the house is Safeway, a well-stocked 24-hour supermarket, and Whole Foods.
It is true that in the Castro area, as some reviewers say, there are some places where many homeless people gather, but... this is San Francisco.
As a traveler, I found the streets around the house very quiet and never felt insecure.
Thank you Vannida!