Zack's place is a wonderful place for travellers to explore San Francisco on a budget. Zack tries to make the place as perfect as possible. The kitchen is spacious and there is supermarkets and fast food restaurants nearby. So it's good for a long stay too. I stayed at a 4-bed dorm which was full everyday and there's always two guests snoring loudly at night. I recommend people book Zack's another dorm room which is much more spacious and is often empty.