Best thing for any "cement" floor, is plain old cardboard.
Available everywhere there are boxes, and for free!
Flatten the box out and you can tap dance while building. Just lift and put aside to vacuum, disguard when old.
Nothing to purchase, no fuss, no must, no chemicals, no odors, no risks, no returns, no buybacks and no refunds.
Simple to remove when you get forclosed on and leaves no tell tale sign that any modeling was ever going on.
And don't forget the mirror. Gotta take a peek from time to time, instill upon yourself what a great modeler you are.
Charles