Amazing amazing AMAZING. Reinhart's House Boat is an absolute treasure. Literal minutes from city center by a FREE ferry (which is an "must-try" Amsterdam feature), it serves as a great home-base for traveling out into the city. The space felt private and is perfectly clean and beautifully decorated. The bathroom has amazing water pressure and hot/cold water despite being on a boat and the room is equipped with a fridge for your inevitable leftovers and bottles of wine. The facilities over-all are phenomenal.
Each morning Reinhart offers a breakfast which he places out on your own private dining area providing an easy way to fuel up before a long day of sight-seeing. On top of that he offers the best priced bike rentals and other fun amenities you can take advantage of.
Anyone traveling to A'dam, you would be missing out if you didn't decide to stay here. It was 10/10 would stay again in a heartbeat.