A great place to stay!
The flat is spacious, quiet, and close to the convention center (~15 min. walk). There are also various bars and restaurants located all within close walking distance that allow you to enjoy the local night life, which was a real life saver for me to get dinner on my arrival day. The separate entrances from the exterior to each unit give a nice vibe of privacy. It was really clean and seemed newly renovated (and very-well maintained). The shower, washing basins, and the lavatory are all separate, which makes it great stay for multiple people as well.
Overall, Jim was a really friendly and very responsive host who made sure to make the stay utmost comfortable.