Great location, nearby the main attractions in Amsterdam and about a 10 minute walk from the central station (which goes to/from the airport). There was a breakfast voucher included for each morning at a nearby local bakery, which was delicious.
Matthijs was incredible and gave us helpful tips when we arrived for check in. He also helped us wash/dry a bag of laundry, which was very much appreciated since we were in the middle of our trip.
There were daily towel changes, like a hotel, and a coffee maker in the room. Other amenities included a hot water boiler, tea bags, and a mini fridge.
Just note that there are steep steps to the room and the streets may be noisy at night if you keep the windows open (not a problem with them closed though). The shower is also pretty cramped, but the water power is great.
We loved our stay here and would definitely return for our next trip to Amsterdam.