Hotel is located beside the Paranoá Lake (which is big by the way) so you will be in north part of it.
Is kind of far away from everything (but close to government buildings) ... you will have to get a taxi even to get dinner, because there is nothing close to there. It is roughly at 2,5 km from Brasilia's landmarks = government buildings and cathedral.
It is a historical building therefore they do not have a "star category" classification ... but I would rated as 4 stars.
Staff is helpfull and rooms ok (simple and clean). they have a big swimming pool and a fancy (and expensive) restaurant beside it.