We had a lovely time in Axelle's apartment.
It's genuinely a fantastic location - there so much going on just in that street and beyond into the town. Grand Place is a 10-minute easy direct walk from there and you get to see busy local places on the way - coffee shops, bars, restaurants, retail, street food, etc - rather than typical touristy bits.
The apartment is very big and spacious with a modern feel but very comfortable, clean, extremely well-equipped, and very comfortable.
If you plan to stay longer and cook indoors then there are decent cooking facilities with full size appliances, food storage, crockery, and preparation equipment.
Axelle was very helpful with our checking in and out, and responded to our questions immediately.
We really enjoyed our stay in the apartment and it made our weekend in Brussels even more special. If we're near we'll stay again.
John