The Airlock
You’re in a comparatively small pressurized cabin. On one wall is a massive hatch, presumably used for making spaecwalks. Of course, these can’t be accomplished without a proper spacesuit. Opposite to this door into space is a rack with compacted white spacesuits, each labelled for differing sizes. Maybe you could take a little spacewalk while you have the chance to… Forwards still is an entry tunnel for the centrifuge ring, and backwards is the science lab.