Great Location - Apartment with Problems.
Nothing beats the view to the Grand Place. And all the noise makes it even better, you're just part of the vibrant city Center of Brussels. The newly opened Cafe at the ground floor is really good. (Cafe Tiena).
Apartment itself is mostly clean and well furnished, and has everything you need.
But some issues like: Heating is turned off, Alarm goes off frequently, some water leakage, and a 300$ deposit is required.
For a long stay, consider another Apartment in the building or wait until the issues are fixed.