Hard to say. It kind of depends on what room type you exchanged into and what your preferences are. If it's a spa unit, you won't have any choice other than tower 4. If it's a loft unit, it could be in tower 3, 4, or 5 (only 5 if it's a 1 BR loft). If it's a suite or villa unit you could be in any building except for punta. Generally they don't give you a choice anyway; rooms are preassigned a week or two before arrival by priority order (owners ranked by equity, then exchangers ranked by their assessment of likelihood of making a sale due to exchange system you used and any other information they were able to glean), once you get there and check in the sales recruiter that signs you up for a presentation will adjust the room assignment as desired to entice you to attend or punish you for not agreeing to.