We had a lovely weekend at Flori's place - it's nice and close to everything you need in Brussels. We walked everywhere (about 10 minutes to the old town, 30 minutes to the EU, 40 minutes to the midi train station). We went with our 18 month old son, and Flori was very accommodating providing a travel cot. Brussels is reasonably push-chair friendly (if you don't mind cobblestones). And most of the restaurants had highchairs, and some had kids meals.