The walk to the park is 7 minutes.
The elevators for each tower are at the entrance where you enter the tower. Elevator noise won't be an issue unless you get a room right there. The odds of that happening are very slim.
Ice machines are located where the main hall way forks, which is in the middle.
The all mighty RPR room thread is here.
http://www.disboards.com/showthread.php?t=616763&page=1&pp=15
Most people like tower 1, a room on the 6th or 7th floor, and pick rooms 1719-1733 odd. If you're on the 6th floor that would be 1619-1633 odd.
1619 or 1719 would be close to the ice machine, in the middle of the tower, yet far from the elevator.