Sorry, but I've read some misinformation in some of the posts above.
First of all, Trinidad Noth most certainly has its own quiet pool. I know, I've been in it. Each of the 6 villages has its own quiet pool.
"Preferred location" costs between $15-$26 extra per night, depending on the season. Preferred location means any room in one of the 6 buildings closest to Old Port Royale. Those buildings are Martinique 24-25-26 and Trinidad North 31-32-33. Trinidad North has only those 3 buildings. Martinique has 6 buildings; the other 3, 21-22-23, are NOT preferred location buildings.
Preferred location is something you reserve and pay for. Sure, you could simply REQUEST it, but keep in mind that everyone who paid for it will be in line ahead of you, and even if there is a preferred room available to you, its not unlikely you will asked to pay for it if you want it at time of check-in. A free upgrade is by no means unheard of, but certainly can't be counted on.
By the way, other possible upgrades that you can reserve and pay for are water view and king-size bed. Water view might not be a view of Barefoot Bay, it might be a view of a quiet pool. King-size beds are sprinkled throughout the resort, they aren't segregated in a certain spot or in a certain type of room. And surprisingly enough, Disney will not allow you to pay for two or more upgrades (in other words, you can't pay $15 extra oer night for preferred location AND pay ANOTHER $15 per night for a king-size bed in that preferred location room). They will only allow you to reserve and pay for one of them. If you want two or three, you gotta choose which ONE is the most important to you, and then reserve and pay for that one, and put down the others as requests if you want.
People who don't want to pay for preferred location but want to be as close as possible to OPR can request Aruba or Jamaica, which are across the lake (Barefoot Bay) from OPR. The non-preferred buildings of Martinique aren't bad, either. Barbados is the next farthest, but the very farthest of all is Trinidad South.
Each village has its own quiet pool, its own bus stop, and its own beach. So NO ONE can be too far from a pool, bus stop, or beach. OPR has its own beach, its own pool (the main pool!) and its own bus stop. OPR has one food court and one table-service restaurant.