The Grand is the spot. Located right across from the Mountainside transit center, the amenities are great, and there is a complementary shuttle that can bus you to and from town for the duration of your stay. They also have The Cabin, a great bar/restaurant that is a great place to meet up for a meal or night cap with the other guests staying here.
Inexpensive, downtown motel
There are a lot of short term rentals in town that are a great substitute for the hotels in the area, if that's what you fancy. We recommend you book sooner than later as nightly rates often go up for September the closer you get to your stay.