Such a great find, the building is lovely and filled with natural light. It's super easy to find aswell. When looking at places to visit in Brussels this building actually came up as one of the most beautiful!
There is a lovely coffee shop a short 2 minute walk which we would recommend called BOUCHE Specialty Coffee and a lovely cocktail bar below.
If you are a light sleeper and need peace a quiet due to the location I would say you would need ear plugs. We did love walking up after a nap to Jazz buskers on the square infront.