I guess living in that area is expensive overall ant there isn’t much options to live in. There are couple recommendations I could give:
1. Give the guests the keys from the room. The ability to leave the room with all things inside safely is important.
2. Write a description of utilities and check in instructions. It is important for people that arrive late and wander in the dark to find their room.
3. Change the pillows in at least one of the bedrooms. They are extremely hard.
Overall, it’s good there is parking available as well as self checkin. As for the disadvantages I could point out thin walls.