If you have as a minimum your one twenty (20) amp bathroom container on a bathroom circuit, the way I read things is that you can choose additional containers off anything circuit you want. Functionally, I'm not sure how that will work out for the tenant. They won't essentially know which one is the "bathroom circuit" and which one is on with other material. You know good and well that they're going to plug their hairdryer into the receptalce that you installed off the other nearby circuit; probably the one that does a couple window air conditioners too.
Best Regards,