I stayed at Conch Shell back in February. The noise from Cholos stopped around midnight, but the noise from the dive shop is early morning. You will hear the clanking of the tanks and rock music loud enough for you to sing along. It didn't bother me, but you should be aware. The room doesn't have AC unless you pay them $10/day extra. Then they connect a portable unit (I think on wheels). We didn't use the AC, just had the ceiling and standing fans on full blast all the time (and the shutters open). I was staying on the top floor (Room #4). These units have a small refrigerator, microwave and coffee pot. The sink in the kitchen area is the only one. The toilet and shower are in a separate room.

Gela's AC Motto: "All Roads Used to Lead to BC's - Now They Lead to Hurricane's!"