Great place as clearly outlined in their descriptions. Central but not too central, so you are about 10mins walk from a lot of the main attractions. We stayed there because we did want somewhere a little away from the main places but close enough to walk in. Really close to the main transport links, great hosting from Stefan. They advised us really well on local places to go and see and restaurants.
The apartment is really great, nicely finished and warm and comfortable. All you could want or need for a great stay in Brussels.