Upside Down Escape Games

In the suite on the end, with a logo of a big owl with an upside down head above it. The bathroom is past the desk and has a sign with a whole bunch of gender symbols on it.

I haven't been in it, and have no idea if it's wheelchair accessible or has a changing table. (If someone does go in, that would be a good thing to add.) I also don't know if they'd let non-customers use it, but they seem really nice there and I bet if you asked they would let you. There's a Dunkin right next door though, which is bound to have gendered bathrooms at least.