Good place to start discover Brussels. You can easily reach the building of Brussels's Stock Exchange (La Bourse) and Grand Place walking on foot by 15/20 minutes. The host was very friendly and helpful. He showed me the shortcut: the way along the canal - via Haavenlan street after that focus on Saint Catherine's Church and you are already in the place. La Bourse is for me the heart of social and entertainment life. There are a lot of amazing shops (fantastic, old school shop with vinyls) , cafes, restauratns and one of frites place (in the back, on the right-hand).
I can recomend this apartment and the city for every open-minded person.