Be aware that this is very basic, hostel-level accommodation. If you're just looking for a clean bed and a warm shower then Maris B&B will do fine. However, there are no grounds or common area where you can just chill and read a book.
The room is very basic and opens directly outside. The door is a hollow, interior door with a locking knob. In other words, not very secure. So you are best to keep valuables with you and not in the room. There is no closet or shelves or even a simple hook so you have to keep your clothes on the floor.
The shower features one of those electrified shower heads euphemistically known as a "Widow Maker". It worked just fine other than the fact that you have to keep your water flow low or you just get cold water. However, I would say that that type of device, if improperly installed, is a recipe for disaster and should not be allowed in a hotel.
Location is good if you don't mind climbing a hill. The location is quiet compared to the row of hostels in town.