Mario's place was good, but not great.
The place was quite big and spacious, had everything we needed. The communication and check in was easy. The kitchen was well equipped but didn't feel that clean, some cutlery and glasses felt a bit greasy so we had to wash it before using.
The location wasn't that great. It's 5 minute walk to train station but there is not many tram routes around the city. If you want to walk to the city center, it's around 20-25 minutes walk and first. We had to walk to and from Brussels Nord train station because there is no tram going this direction and the neighborhood didn't feel that friendly and safe.
Anyway, overall it was a good experience but I wouldn't say that we loved it.