Amazing location. It is far enough from the busy center that you won't have giant crowds of people outside of your door, but is still within walking distance.
It is right next to the Albert Cuyp Market which is a great source of clothes, souvenirs, and street food. There are numerous restaurants within a 5 minute walk, and a laundromat is located across the street. I used the Albert Heijn grocery nearby to stock up on water and some food for the fridge.
Heaters are provided for when it gets chilly.
The shower has a rain shower style head and I thought it was cool to use.
The bed is actually 2 separate mattresses pushed together. They will sometimes slide away from each other, but just push them back together.
The cars in the area constantly honk during the day, and since you are on the 1st floor this can be very apparent, but I was not bothered. Ear plugs are provided, but I never used them. At night, there are not very many pedestrians walking around so the honking stops and you can sleep peacefully.
Overall I had an amazing experience and would book here again.