Frank's place was excellent. Upon arrival, we were greeted by Marije and they had left us a nice welcoming chocolate! The place was in a really good shape and nicely done, suitable for a traveling couple. The location was near to the city and yet you get to enjoy a different facade of Amsterdam, quieter, serene and scenic view. Its a great experience to live in a boathouse even just for a few days. We wouldn't hesitate to stay with them again if we're coming back to Amsterdam.