I really can't recommend ShahrYar's place enough. There are great transport links into the city with trams and buses accessible 5-10 minutes walk away and the metro a 15 minute walk away- through a very pleasant and safe area. I travelled alone as a woman at all hours and felt completely safe the whole time.
The flat is beautifully modern and well equipt, with the only downsides being no freezer space and no toaster (but you can grill bread in the convection microwave oven). The view is amazing with a window spanning the whole length of the flat looking over lush greenery. The flat is quiet and has lift access also. Etterbeek is one of the nicest areas in Brussels and the writer of Tintin was actually born nearby!
Great communication from ShahrYar with easy check in and out. A very good price for what you get, I would definitely recommend.