My experience has been it's extremely rare (so far) to find hotels that advertise themselves as EV-friendly (on Plugshare/Recargo or otherwise). The times I've taken road trips with uncertain destination charging options, I've called around to a few hotels to ask if any would let me plug in. I haven't yet found one in Pittsburgh, but I used the Electric Garage on Carnegie Mellon's campus because that was my daytime destination. That's not terribly convenient to South Hills, but it's a great option (8 charging stations) if you don't find anything closer.
I did find two hotels in NJ with 110V outdoor outlets and EV-friendly policies -- a Holiday Inn in Cherry Hill (one somewhat inconvenient outlet that I ended up not using), and a Hyatt House in Branchburg (4 pretty convenient outlets, 3 of which worked). Neither one is on Plugshare/Recargo yet, although I've encouraged both to register themselves.