pianos.pub - Find a public piano to play.

Fair blue painted baby grand in the Central Hall located in the non-secured area.

The studio is designed to be somewhat interactive (they also have an indoor swing) and there's a sign on the piano (a Steinway baby grand, iirc) that says something like "play if you know what you're doing, if you don't then don't". When I was there they had other music playing, but the person working there noticed when I started playing and turned it off.

Lobby Hours are Mon-Fri 9AM-6PM. Piano still available after hours (which provides more privacy if desired) but lobby entrance is closed - can enter through emergency room or other entrances.

By the restrooms and just down the hall from the cafeteria.