My partner and I stayed at Leonie's place for a week at the end of October. We were really surprised and impressed how big and spacious the boat is. There is heating that works absolutely perfectly which was important to me because I get cold real quick. The bedroom bed is comfortable and great for two people. The 'cupboard' bed is good for one adult or maybe two kids. There was a big selection of tea and coffee available. The boat has Wi-Fi but the connection is a bit weak and patchy, hence the further in the back of the boat you are you won't have a connection. The boat seems to be old(ish) and the furniture has seen many people. Which was fine by us.
The location is definitely unbeatable. It is super central yet really quiet! You can walk to most locations and if you need to take the Metro or tram then both stops are only 1 minute away.
The communication with Leonie was super easy and the check-in was very easy.
Overall we would recommend the place to other people since it is an experience and something else than a 'normal' Airbnb!