To the point.
Yes it has a long staircase. However if you are traveling to the Bay Area I feel this is a given. Jasleen gives photos and very detailed directions. You have a full living room and 2 full bedrooms.
You have plenty of space! Huge windows surround the whole place. It’s really light but because there are so many trees it never over bright.
You do need a car. But the car ride to downtown Montclair is 4-5 minutes. You definitely could Uber down town Montclair from the house.
You do have to take off your shoes but there are slippers there for you right there and there is carpet. I did read a review saying carpet needed cleaning but I didn’t see any sign of it being dirty.
If you are going to do the touristy thing and go to San Francisco it’s about a 20 minute drive or Marin about 45 minutes.
The place is really big. The beds are really nice too.
I will definitely be going back there on my return. Also it was really quiet I hardly heard them upstairs. If at all.