The Map that Michael posted above is good. The 3 DVC Buildings are in the North East area of the property, Tokelau, which is next to the Secondary pool and the commons area, and is oriented north-south. Moorea to the east, right on the edge of the lake, and Pago Pago, the smallest DVC building, across from Moorea and slightly south. (We won't count the Bungalows, since they aren't REAL DVC buildings anyway. They are just Disney's scam to make extra money off the backs of the DVC Owners. I say they aren't real DVC because, frankly, very very very few people will ever spend their DVC Points to stay there. So, they really are just Disney rentals. And even then, they often sit empty.)
On the north side of Moorea is the Lake. All Lakeview rooms are there. To the south of Moorea is a commons that is formed by the triangle of Moorea, Pago Pago and Tokelau. Pago Pago has only Standard View studios, and they look out on the commons to the north, or a parking lot to the south. Both Pago Pago and Moorea are the closest to the Tickets and Transportation Center, and to the Magic Kingdom Ferry, and it is likely you will be walking there at least a few times (about a 6 minute walk from Moorea, PLUS security time). Anyway, if you plan to go that way often, you might choose Moorea or Pago Pago. If you have a Standard room in one of those two buildings, I would request Moorea, and ask for the Eastern end of the building if you go to the TTC a lot. Moorea also has the DVC Laundry rooms.
But my favorite building is Tokelau. It is all Standard View studios, and the ones on the east look out over the common area with Moorea and Pago Pago. The rooms on the west side look out to the secondary pool and the main commons area. I haven't found pool noise to be a problem there, and it also has decreased noise from the Ferry horn, at all hours of the day, which can be especially bad at Moorea and sometimes Pago Pago.
I would request a 3rd floor room if possible (higher floors have a bit better view, in my opinion, though ground floor rooms open right out onto the commons). I also like the north end, since it is closer to the lake, closer to Moorea for laundry, and it has a stairway on the north end with a large deck area attached, where a lot of people can go to see the fireworks at night, and be close enough to the beach to hear the music/show. You CANNOT really see the fireworks from your balcony at Tokelau or the Standard rooms at Moorea, and only very poorly from a few of the rooms in Pago Pago. That is why for fireworks viewing I recommend the Beach or the Deck on the north end of Tokelau. Perhaps you might also see the fireworks from the stairway on the west end of Moorea, but I don't know since I never tried it. Tokelau is also closest to the Great Ceremonial House (the main Building) and the general commons area and the food court in the bottom floor of the Main Ceremonial House. So, I think it has a more central location.
The Main Ceremonial House is also the place where you will catch the Resort Monorail. The Express Monorail does not stop there. Express Monorail circles counter-clockwise and only stops at Magic Kingdom and TTC. If you plan to take the monorail to Magic Kingdom or Epcot, the Resort Monorail runs clockwise around the lagoon, and it will also stop at Grand Floridian, then Magic Kingdom, then BLT/Contemporary and then the TTC. This whole trip takes about 25 minutes. Once you get to the TTC you can transfer to the Epcot monorail. Or, alternatively, you can just walk to the TTC and catch the Epcot monorail.
I don't like Captain Cooks, which is the counter service restaurant at Poly. I think it is possibly the worst counter service restaurant at any of the resorts. I just didn't think their food 'worked' very well. On the other hand, I love Kona Cafe, on the main floor of the Great Ceremonial House. For Breakfast or Lunch you can just show up and ask to go on their waiting list, and you will generally get seated pretty quickly. If you are sure you want Dinner there, then do try to get Reservations if possible, because they do get full, and sometimes have quite a wait. Ohana is the 'upscale' restaurant at Poly. It will almost always require a reservation for dinner. They specialize in serving different meats, mostly Asian/Pacific style flavors, on skewers, and they top it off with several Asian type side dishes. But, a great option is to order Room Service Delivery of Ohana for Two (I think you need to order it for AT LEAST two), direct to your room. I believe it costs about $50 a person, but if you order for two, they easily bring enough food to feed four people.
The Lava pool (main pool) at Poly is considered one of the better pools at the DVC Resorts. There is a little counter service area at the Lava Pool, and also sometimes open at the secondary pool, where you can get a sandwich or hamburger or snack.
Poly is also about a quarter mile walk, along the lakeshore, to Grand Floridian, and we sometimes go there for breakfast, since it is better than Captain Cooks, and Grand Floridian also has great atmosphere and some other excellent restaurants.
