Reminds me of this metafilter thread [0] where people asked/shared less usual work locations. Hotel lobbies are a great one, as have laundromats sometimes been in the past.

An intercity train with wifi/cell service (and tea!) is an incredible focussing function as well. You got 3 hours and a beautiful not too distracting view. Go!

P.s. I also suggested to Stephen that he gets a Nathan Fielder “laptop harness” for his subway work..? Has anyone tried this?

[0] https://ask.metafilter.com/316039/Ideas-for-workspaces-pleas...