I've been there on business for one single night. This is a good place for staying, has relatively good and enough facilities as well as comfort and cleanliness. The breakfast is well done and the fitness area provide good time for exercises.
Another highlight is the view of guaiba from some rooms, not all.
I'd stay there again.

The top floor has a pool, not big but ok, with a nice view. Road in front has a lot of traffic what makes the room a bit noise. The room has special windows to avoid all the noise, but you must to keep the windows closed.
Service was alright as the breakfast.

Only stayed one night but room was clean and had everything I expected. Front desk was helpful and spoke english.

I really expected more from a Blue Tree Flat.
First room I was sent too had a VERY DIRTY bathroom. The manager promptly found another room for me.
Still I found some unfinished potato chips in the new one.

The room is comfortable, average room and equipments. Good shower.
Restaurant is fantastic!!! Great food, great breakfast.
The hotel is located in front of Rio Guaíba and has a beatiful sunset view. You can see the entire city from the roof, where is located the fitness center (good), poll (small but OK, warm), and a good bar.