There's currently only 1 other TB Hotel in Brussels and not a lot of caches are big enough to foster TB's or geocoins in the city.
Therefore, I present you... the East Brussels TB Hotel (also suitable for geocoins and other trackables of course).
This large TB hotel contains 8 rooms (update March 2021: extended to 13) and the reception where you will be able to register.
At the publication, all rooms are occupied.
In Room 8 at the right of the reception there's an unactivated TB for the FTF ...or anyone else if he/she doesn't want it.