Stay on a boat! Egbert's converted grain freighter is a great example of a uniquely Amsterdam housing type that not everyone gets to experience.
Situated east of the center, it is easy to get in and around by a regular bus or by renting a bike from the shop nearby.
The suite itself is minimal: bed, small kitchen and bathroom. It's all you need. Be ready for some steep steps/ladder getting down into the suite. Otherwise it is clean, comfortable and well designed. There's a little bench outside the hatch that we sat out on for a whole night looking out at the port.
Egbert and his wife are very sweet and offered some great suggestions. If you're there in summer there's a dock a minute walk down the pier that's great for swimming!