I want to start by saying Bei's place is a great stay at a great price in a great location. I would recommend it to future travellers in the Bay Area, and the price for a comfortable private room can't be beat.
With that being said, I felt that not everything about Bei's place was laid out clearly in the listing. Bei has two young boys, neither of which are infants. While they could get loud at times, it was usually not beyond what you would expect at that age. In addition, when I was staying there, there was another long term guest renting another room who had a cat and a dog. While the pets stayed in the guest's room and were not an issue for me, it's something that I would have preferred to be aware of ahead of time.
As I say, the room is still an unbeatable value and I would still recommend staying here. Thanks Bei!