Very good place if you are in Brussels for a conference or speaking engagement for a night or two. For those who haven't been to Brussels before, it's situated nearby all of the main EU institutions and you won't have to walk far.
It's clean and while there is definitely no clutter, it might also benefit from a few decorations here and there. Perhaps some artwork on the wall would be a nice touch. I would have appreciated a bit more of a proactive approach from the host in advance of me arriving with information on what to expect for checkin. There is no physical key to the place, but rather an access code that you are given. Maybe this was written somewhere in the description, but it would have been nice the day before to be reminded of what to expect as I found myself trying to call or text the host from the street to get the code to enter.
Overall, it's a great spot for a night or two and good value. It may not be the most suitable for longer stays due to the limited kitchen.