Stupid Non-Sleeper Couch

This is the couch left behind at my apartment by the previous tenant. 
This is the staircase that someone needs to negotiate to take the couch off my hands.
I suspect that the landlady/broker (aka Little Orphan Annie) was being flaky (rather than manipulative) and may have promised the previous tenant that I would buy the couch from her…whereas I said I would only even consider it if the couch was a sleeper sofa. As a matter of fact, I have a general policy on not accepting hand-me-down plush furniture or other items that cannot easily be disinfected. In any event, it is a moot point, because the girl left the couch there and refused to come back and get it. Then Little Orphan Annie tried to convince me to keep it anyway, even though I explained that I was planning on buying a new (SLEEPER) sofa and have no need or desire for a cramped, two-sofa living room set-up. Ultimately, she asked me if I could arrange for my mover to take the old couch out, and tip him extra (which she’d theoretically pay me back). I was annoyed enough to just tell her it would be taken care of.
Other people pointed out that I may as well keep it until my new couch arrived, and then my brother and dad both said that they could help me move it out if necessary. But still other people had a much better idea: if the previous tenant was too lazy to sell it herself, there’s no reason I shouldn’t try to sell it. Therefore, it’s now up on craigslist, for sale to the highest bidder who can get it down the stairs.