A rug with a horizontal pattern could help along with a false ceiling above in which you can install a line of recessed lights. The tiles and border on the walls suggest that this is a passage in a shared washroom space like a health club. It looks a bit cold for that reason. So hang a lot of warm framed prints to make this space more inviting.

Hello , I just checked dealers for Simpolo and it has names I already visited. still if you have any design number for Simpolo or Sunheart it can help. Thanks for your response

You would need a base steel grid in case of a climber. Plants that require least watering would be bougainvillea, blue morning glory, star jasmine, bleeding heart. If you are not keen on a live wall perhaps you can install artificial grass/turf on the wall and complete with some wall masks.

These are some of the colors that I liked.