I stayed in the Hilton for a business trip and the hotel is very nice. The rooms are spaceous and the hotel is conveniently located near a shopping mall. The staff (frontdesk and concierge) are very helpful and do have great tips if you want to go somewhere for dinner.
The location is a bit remote in Sao Paulo but if you are here for a business trip this is a great hotel to stay in. I would definitely pick this hotel again next time I am in Sao Paulo.
If I had to mention some negative experiences than it would be that you have to pay for entering the pool (10 reals) and that the hotel doesn't provide cheap bottles of water to drink (you can not drink tap water in Sao Paulo)More