Awhile back, I updated the bathrooms with new vanities, granite countertops, and new faucets. But, I don't think I really saw increased rent on those upgrades because 

1) the kitchen also needs to be updated

2) the bathroom wasn't completely remodeled so it feels a bit incomplete 

The kitchen is too expensive to remodel and update. 

But, I've already spent the big money on the bathroom so I figure if I finish updating the bathroom, then the bathroom might feel more like a remodeled bathroom than what it currently looks like:

The biggest thing I could do seems like it'd be the bathroom mirrors since they're so big and something you see when you walk in. Right now, I have those builder grade mirrors in the bathroom that take up the whole wall. (Its ironic that designers love stand alone mirrors to visually expand the space and reflect light, yet its considered dated to have a huge mirror like that in the bathroom).

From what I see, the thing today's bathroom mirrors have are frames surrounding the mirror. I went on youtube and looked at instructions and found all these instructions where they kept the current mirror in place and then added or glued a frame around the existing mirror. 

To add a frame over the existing mirror like that, it seemed a bit complicated and wasn't even that cheap. Why not just take the existing mirror down and then buy a framed mirror from Home Depot and attach a framed mirror to the wall?