We had a great time with the confusing map. At no point did my players get that they were circling three layers of the same four rooms. They still brute forced the routes and could escape in pretty much a straight line. If you're a potential warden consider making it more evident that it's four rooms that happen to change depending on your previous position.
Something I would had liked having is a bit more description of the implied plot. Like what knowledge and expectations the frozen NPCs would have. I think I made them too flat for the players to care about rescuing them even though they were planning to have a champagne party with everyone when the idea of taking survivors came up.





