Would love some thoughts about how to deck out a powder room that's not the usual narrow space. Floorplan is attached. When you enter the space there is a sink cabinet straight ahead of the door and the toilet is to the right. There's an empty space in the back corner that we could use for a table or plant.

Many of the powder rooms I like on Houzz have full height accent walls behind the sink (tile or wallpaper), but I feel like a full height accent wall might look strange with this arrangement with a sink cabinet on the left side of the room and empty space to the right of it.

One thing I've been considering is wall trim around the perimeter at just above cabinet height, but my husband thinks that may be a bit traditional-feeling, where the house is more transitional/modern:

Thoughts?