I go to the Y right across the street from where I work. It's convenient and cheap, only $25/month. But they only have a few machines, and the ones they have are getting kinda old and should probably be replaced. Also, it gets noisy when the kids upstairs are playing basketball.
I'd much rather work out at home, but I have no room for a treadmill. When there's more daylight in the evenings, I'll quit the Y and start walking outside again. There are no sidewalks or streetlights where I live, so I don't dare walk in the dark