If you post a breakdown of the numbers on the rental we might be able to give you a better idea. Cash flowing a couple hundred bucks a month is fine if you've included all your ongoing expenses (ie, putting aside money every month for 20 years to replace the roof, assuming some vacancy, etc) and the place was very cheap. If you just mean you're getting a couple hundred more than PITI, that's probably very bad. If you spent $300k on the place, that's also bad. If both, ouch.
-W