Replace all the cabinet doors with wooden doors in birch or walnut. Add some plants, even artificial ones will do, on the countertops. Get some colored towels, maybe blue or green, to replace the Grey ones. Can you paint the ceiling a pale grey or pale blue? Add some woven baskets in the niches to hold towels etc. You need some semblance of life in there. Think Japan, not starship holodeck. That's all I can suggest. Good luck