We had building 55 once, and our room was directly above the hot tub. We hated that room because we were treated to some loud, drunken, conversations at all hours of the night. It sounded like they were in our living room! If you request that building, I would recommend requesting a room as far from the pool as possible.
We like Turtle Pond because it feels like it's in the middle of the resort. We also like having access to the Turtle Shack, the Flying Fish arcade, the shuffle board court, and the second tennis court. It gives my teens some other things to do without making the trip to HH. The pool is also slightly larger than the other two quiet pools.