Do the moisture test. Tape a clear piece of visqueen to the floor in several area, 2' x 2' .
Tape it down well along the perimeter. Wait 24 hours and if you see moisture under it, you have moisture issues.
If you have issues...
You may be able to stain and apply an acrylic sealer, inexpensive and a nice compromise. The sealer will allow the moisture to pass through.