i've never been in there,but i pass by it at least twice a day.looks reeall shady to me-kinda like a bodega gym or something
if it is your only option though,i'd go by and check it out in person.see what kind of customers they have,and the environment.
what kind of equipment are you looking to use?i also have a weird schedule,and i've pieced together the equipment i need to do my workout at home.i've definitely saved money over paying gym dues.but,i don't have a very elaborate setup,and i'm certainly missing out on the scenery
chris