With regard to hotel rooms, I prefer booking at the Residence Inn. I've hosted quite a number of parties, from half a dozen to upwards of 50. The two-level suite is great for the larger parties and the one-bedroom suites with two queen beds is perfect for smaller groups. They all have a couple of TVs if you want to hook up a portable DVD or other player, and, of course, a sink, fridge, silverware, glasses etc.
Noise is generally not a problem except when the parties get bigger than about 15-20. Also, parties in the summer time, when folks might want to duck out on the porch or patio means the door is opening a lot. Same is true when we booked two adjoining suites, where one had to cross the porch.
Someone mentioned that one didn't necessarily have to schedule the party for the evening. I once rented a suite, checked in around 3pm, hosted a party that evening that ended around 111 or midnight, then hosted a second party the following morning from about 9-11am, leaving enough time to do a little cleanup.
Good times. :-)