We have a B&B with 9 bathrooms. We found that by simply switching out the sink, mirror and lights, the bathroom looks like new. We left some older floors in most and most use shower curtains. But that new sink just shines and updates the room completely.

Since you are doing it to sell, you don't want to sink (get that pun?) a bunch of money into it. You can get a beautiful vanity cash and carry at any of the big home improvement stores.

thank you both for the advice.