Just a quick update: Mountainside Fitness is doing a minor renovation and recently moved its locker room upstairs. The new locker room is very nice, and the lockers no longer have keypad combinations (ie: bring your own lock).
The renovation added some additional floorspace to the gym. This would have been a good opportunity to add to their somewhat limited weight machine selection. So far, the space is being used to hold some additional free weights and kettle balls.
The only change my girlfriend doesn't like: There is a new stocking area behind the front desk with a variety of snack foods available. While some options are healthy, others (like bags of Goldfish treats) just create temptation for her every time she passes by (which is often due to the gym floor layout).