I got this hatch in the wall that is never used, and i got this electric radiator on the wall where you can hang towels etc .

I need to figure out how to make this wall usable and get rid of the ugly hatch look. What would you suggest?
Few thoughts I have... A long vertical painting? Bunch of hooks? biiger radiator (hard to source though)? 3 square pics stacked up? Unsure what should be on picture as well, bathroom is simple, mostly white with dark brown tile floor.

BTW, in last 3 years I have used the radiator 3 times. May be I should just chuck it out and put a nice big picture there in black and white?...

PS. The view is facing the toilet bowl! sorry cant take a pic further away. And if you sit on the porcelain throne, this is the view.