I stayed at the Comfort Suites twice in 2008, just recently returning from a two week stay. The hotel is located in "downtown" Alphaville, with a shopping mall, a commercial and shopping area right across the street, several supermarkets and restaurants within walking distance and a car and helicopter rental agency in the main lobby.
I would classify the hotel as a solid 3+* hotel: My room, including a kitchenette, was spacious, clean with a nice big bathroom including amenities. The water regulation was difficult at times but a minor glitch. Room service was impeccable and laundry service very fast (usually same day delivery without an "express request").
Breakfast is in the basement with that what I would expect from any good Brazilian hotel: Lots of fruit, fruit juice, strong coffee and cakes. There were the usual cold cuts, cheeses, bread rolls, eggs and pao de queijo too.
The hotel shares a fitness room with the annexed Radisson hotel with the usual equipment and a small pool - a bit aged but clean and functional.
The highlight of the hotel is the staff: Attentive, friendly, knew my name within a few days, catered to any special requests I had and were sincerely happy to see me arrive the second time after having been gone for a few weeks.
I got a special ca. 200BRL rate which, with the current EUR and USD exchange rates is a steal. If you have business in Alphaville, Barueri or anywhere to the west of Sao Paulo on or near Rod. Castelo Branco, you will hardly get a better deal than this place.
I will be happy to return in 2009.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC