The Westin seems very locked away from everything that makes the area great, that and they have very poor relations with the locals. We've stayed at El Mangroove yearly and it has always been a great experience. Rent a car, Coco is an easy drive, even at night. We're only in this area off-peak, so I can't speak to what it will be in the near future, although most blogs tend to scare folks away from driving at night.