I'm a little PO'd at this hotel too as I thought I was getting a metered taxi ride (<10 minutes, ~4km) for my 2nd business day last week - but they snookered me with a flat rate car service that was 4x the price of the meter taxi the previous day.
Between that and the overpriced airport ride, I think I am going to forcefully stay to metered taxis and Sao Paulo Airport Transfers for the GRU trips.
Other than that - I did get a nice Design Room, enjoyed both lounges as usual, etc. There is a lot to like about this property.