Good location on quiet residential street, 7 minute walk to downtown San Mateo. The host is responsive which was nice.
This listing is inside a house that has two other rooms also listed on Airbnb. You get a private en suite bathroom with this specific listing , but kitchen and living room are shared. You get a key to lock your room.
There is no AC and no fans in this room. The walls are thin, so if the other rooms are booked at the same time, you might hear them (if they are loud).
I would stay here again, but probably only for a short business trip and not for leisure.