The hotel is located 50-60km away from the city of Buenos Aires, so for us Porteños it can be considered somewhat away from the city. We decided to go with my wife and baby to spend a weekend there. It is quite easy to reach by the "Panamericana" Highway, about 1.5hours from downtown BA. The hotel is very nice in my opinion, everything quite spacious, rooms are very nicely decorated and huge (we had a "luxury" room). The room had some issues: main phone did not work, weighing scale did not work, there was only 1 bath towel, nothing major really. The bed and pillows were incredible. There is a pillow menu which we did not try.
The gym is VERY modern and the machines are great. Did not try the SPA, nor golf.
The service is quite irregular, unfortunately.
Upon arriving we were informed that breakfast was served until 11AM, but later on we realized this was not true and we almost missed it.
We had a dinner at the "Don Bernabè" the night of the match Argentina-Brazil and it was very disorganized, plates did not come, drinks were included at first but charged later, same tapas were offered 5-6 times because waiters did not know we had already been served, etc. When we asked for a place to change diapers for our baby, waiters did not know if there were any in the hotel.
Upon leaving Valet Parking wanted to charge us $33.- per night in spite of this being included in the reservation (they apologized and did not charge us after showing reservation conditions)..
Just a few examples that (in my opinion) illustrate the need for an improvement in service. At all times all personnel was very kind in their manners and always polite.
Quiet? It can be quiet, but beware, some football teams train/concentrate here so there may be lots of people at times.
Do I consider this a "luxury hotel"? No
Would I return? Yes.
I left a note to the hotel manager explaining this.
The hotel is quite new, so there is plenty of time for improvement.
Good luck.

It is in a great location and the gardens and pools are absolulety stunning in views and decor.
My room was enormous with a lovely view of lake and the gardens. The bed was as soft as laying on a pile of goose feathers. Bathroom was modern and very clean, also I had wireless free Internet access.
Service at breakfast and dinner slipped up some times but I got the impression it were certain waiters who weren't up to standard.
I would return again and again to this hotel, without a second thought.