The plastic curtain didn't help keep dust out of the master bedroom. Construction dust will find any nook or cranny and come bellowing through. Even if the dust isn't think enough to see, it layers on everywhere.
It's difficult to live in the master bedroom while the bathroom is being remodeled. Something to consider, especially if you don't have a spare guest room that you can live in for 4 to 6 weeks during the bathroom remodel project.