Wasn’t there a community goal recently to build a station near the core? Did it ever get built?
It's part of the Distant World 2 expedition which will reach the core in a few weeks at which point the station will be there. Then there will be another CG to equip it.
It will be at WP7 IIRC. You are correct there was a goal and it reached 11 so the station should have jacuzzis and spacelegs and lavian brandy for all
A weightlessness spa would be something to try.