Refresh the bath, not the whole room. Keep it easy to use. Add good light by...

https://dlf-ne.org/how-do-i-compare-the-real-cost-of-a-bathroom-refresh-beyond-just-the-mirror-price/

Refresh the bath, not the whole room. Keep it easy to use. Add good light by the basin. Use a slim unit, hooks or a shelf for daily bits. Ask what tenants need