We enjoyed our stay at Sheena's.
The position is not central, but it is well connected to the center of the city: you can find a bus stop right in front of the house, which brings you directly to Grand Place, and other connections are not very distant.
Even though we never met Sheena, she was very thoughtful and we did not have any problem with the check-in.
Therefore, for a nice stay in Brussels, we recommend Sheena's place .