San Bruno is safe but you will need a car to get around. It isn’t posh but it’s budget friendly and there are many authentic cafes and restaurants nearby (Camino corner for breakfast, taqueria san Bruno for Mexican food). If you want to experience SF on a budget then this place is recommended. Very close to the airport and to a shopping mall that you can take an Uber/Lyft to easily. But for all the sights I would recommend a car.
About the house: It’s super basic. The heating sounds like an earth quake, the hot water runs very sporadically and there are 4 plates, 4 cups, a bottle opener, that’s about it. The beds are comfortable but the bedding is the cheapest you could possibly buy so won’t keep you warm at night. The place was clean. The blinds are weird and do not black out the sun so you will be up early. The coffee machine makes great coffee that we loved in the morning and plenty coffee pots were provided.
The property manager was super responsive. A few blankets were dropped off and an extra cup as we were 5 people. I would strongly recommend better bedding and a few extra dish towels. Overall we did have a good time just don’t come with massive expectations. The price is great for a decent location. Don’t be worried about negative feedback about San Bruno. There will be diverse neighbours close to the property but the house is in a closed gate. Everyone was super friendly. Once I lowered my expectations after the initial shock I had a great time and would actually come back - just not in winter as the heating noise and warm water issue would be a problem.