1. Slow / clogged drains — clean drain grates; use baking soda; call a plumber if needed. 2. Standing water — remove tiles & re-slope floor to the drain. 3. Slippery floors — use anti-slip tiles (R10–R11) or temporary anti-slip mats. 4. Persistent odors — add ventilation/fan; install P-Trap or odor-proof drain covers. 5. Worn grout — remove old grout, dry well, re-grout. 6. Loose tiles — remove, clean, and re-bond with proper adhesive (not just spot fi