We had a wonderful stay on Diewert's place - being on a houseboat really added a bit of authenticity to our stay in Amsterdam. He and his family were welcoming and very helpful. They are also very responsive before and during the trip!
They had a lot of wonderful recommendations of things to do nearby, including Winkel's delicious apple pie! The room was clean and well-appointed. The Nespresso machine with complimentary coffee and tea was nice, and they also have a convenient mini-bar with reasonable prices. The location is great, around 15 minutes from the center and about 5-10 minutes from the Jordaan - a neighborhood with a lot of great restaurants/shops. It's also easy to get to by bus from Centraal Train Station. I highly recommend staying here in Amsterdam !