White pine in the bath.

what kind of look are you goign for? that might help people answer. do you want to keep the color as clear as possible? Do you care about how glossy? is cost a major factor? I’m no expert on finishing (quite the opposite actually) but I think the more you can tell about your objective, the more help you might get.

Poly seems like a pretty tough protective finish since it will be a rental, but some people feel it looks plasticy, especially when applied thick. Also, I think it can yellow. Not sure if those factors worry you.

Oil repels water so an oil based stain would be the norm here. Check with the Minwax website and I think you’ll find your answer.

-- Bob Vila would be so proud of you!