a lot of hassle with just canceling 1 night (maybe better not to book via AirBnB) - Hotel said it's an error on AirBnB side that I have to solve (didn't accept the change request). In the end after emails, calls, opening a case in the Resolution Center, I got the money back from the cancelled night...
Otherwise it's very clean, it has a nice view on Brussels and the windows stop all the sound. Sleeping with windows open is not possible because of the noise - the room is on a several lanes street side, 7th floor. Breakfast 9€ - it has what you need but was all packed in plastics (even the scrambled eggs came in card-board). No buffet - need to order before 11pm the day before.
Pizzaria next door is nice in the evening.
Would only recommend for short-term stays.