I stayed whilst working at the European Commission for a few days and it was an ideal location - really close to work, close to shops and really peaceful for a good night's sleep! Fiona was a lovely host - she cooked a meal for me and we had a nice chat, which was very kind of her! I think this would be a nice place to stay if you were on holiday in Brussels too - the kitchen is really well equipped so a good self-catering kind of experience, and really easy to get the metro or bus into the centre.
I would definitely recommend!