If you're looking downtown, try the
Moore Hotel. It's clean in that somewhat run-down way, funky, gets
good reviews and you could make your $50 price-point if you're willing to go European style (shared bath). Only problem is you'll have to pay for parking if you have a car, but this will be the case anywhere downtown.
I've also stayed at the
Commodore, in the same neighborhood (which really isn't that bad). I prefer the Moore, but both can be decent as long as you don't have tremendous expectations at that price.
For a step up, try the
Camlin, which is a bit nicer, and has a cool bar on the roof. But you're looking at $80 or so.