We stayed for two nights and had a great time in Peter's apartment. The atmosphere on the roof terrace is beautiful especially in the morning and evening. The location of the houseboat is in a very quiet area. But the city center can still be reached in 15 min by public transport (tram during the day, buses during the night). Peter is very nice and helpful. He gave us good tips about activities and parking.
We would definitely book the apartment again!