Just returned from a 6 night award stay. As a Gold, upgraded to Executive floor with lounge access. Echo the other posts; great lounge, great staff, etc. Very hot though, and how do they keep the pool water temp. so cold when it sits in the sun. Very refreshing.
Advice to novices to BA, whe you get pesos from the ATM, hae the hotel break the larger bills, and it can be difficult to get coins at the hotel, which you will need if take the public buses. Taxis are cheap, but need smaller bills for the ride.