The Marina Tower, or the Sierra Tower I would say are the best.
Marina Tower- In the lobby where you check in. There is a
disney store and a little convenient store that has all sorts of things you could need (tylenol, cough meds., etc. water, juice, snacks). You get the 'disney feel' in that tower. It walks right out to the pool and is connected to Goofy's Kitchen. A standard room faces the parking lot, but you get a full view of the fireworks from it and some of Fanstasmic's fireworks

The other side is the pool view. We had a standard room and it had a couch, table with chair, vanity outside the bathroom, in the bathroom a tub and sink and the toilet in a seperate room with a door. My mom had a connecting room with us and it was smaller, no couch and no outside vanity. We both had 2 queen beds.
The Sierra Tower- I have never stayed in there. It is the closest to DTD, although the Marina Tower is right there also just isn't butt up to it like the Sierra Tower is. On one side the Sierra Tower faces DTD, I would think it would be noisey with the music and activity. I've read that if you get the higher floors it isn't so loud. You'd get fireworks with that view as well. The other side faces the pool.
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The Bonita Tower is a bit farther, but not 'that' far. It has the beautiful waterfalls (which are super loud) on one side, no view of the pool. The other side, the side we were originally put in, faces another parking lot, which looked to be the CM's parking lot. It had another building off to the side that I'm not sure what it was? It was so loud over there with what we assumed was all the electical stuff to run the waterfalls. Loud constant humming like a generator. Not sure if it's in every room but our air conditioner was SO loud. It too had the outside vanity with tub and toilet in different rooms. There was more walking space between the bed and tv in these rooms. I would think that if you had the waterfall side it would be okay? The downstairs of this tower had a sitting area and vending machines with water/juices and ice cream.