We stayed here for 2 nights, before and after a jungle trip. The rooms are small but the aircon is strong, it is brand new and immaculate with good bathrooms. There are several sitting areas including a rooftop terrace with views of the opera house. It has all been decorated with artworks and ornaments from around the world as well as beautiful day beds and couches with cushions (this is usually not done well in Brazil!) the biggest plus for us is that we had an 1130pm overnight flight and the manager offered for us to stay in our room without even asking!
Overall an excellent place!