Towers:
Adventure Tower is closest to the parks and monorail. One side has a view towards DTD (fireworks) and the other has a view towards the pool. Some of what would be a pool view from the Adventure Tower are blocked by Trader Sam's on the lower floors.
Fantasy Tower is the tower where you check in. The gift shop is here and Goofy is often seen in the lobby. To me, it has the most "Disney" feel in the common areas. One side has a view of the pool, the other side has a parking lot view. Steakhouse 55 and Goofy's Kitchen are right next to it.
Frontier Tower is farthest from the parks and is known for being the quietest of the 3 towers. One side has excellent pool views, the other has parking lot views. It's closest to the monorail water slide pools and has a nice outdoor seating area.