I belonged to one for two years. I liked the low impact, women only idea. They are very low key. No showers, daycare or locker rooms. Mine had two changing stalls. You work the machines placed in a circle. You do each machine for thirty seconds, then switch to a low impact bouncy board. for thirty seconds, then onto next machine, bouncy board, etc. Each gym has a differnt amount of machines, depending on their membership. This is not the place if you are looking to become muscular. It is good if you are starting to exercise again. It is fairly aerobic in nature. I stopped going for financial reasons. If your goal is weight loss. I would do this and weight watchers or some food plan. Overall, my experience was positive. I think it's pricey for what it is. I paid $40 per month. I believe there are other gyms that have more for that money, but I did not want that meatmarket type place.
Good Luck. Try it out, they usually have trial periods.