Marble, porcelain and the expensive ways to clean a floor wrong
A large share of UAE homes — especially older Dubai and Abu Dhabi stock — have real marble floors, and marble is calcium carbonate: anything acidic etches it permanently. Vinegar, lemon-based cleaners and most supermarket limescale removers leave dull cloudy patches no mopping fixes. Restoring etched marble means grinding and repolishing at roughly AED 15–40 per square metre, so one wrong bottle used across a 100-square-metre flat can create a four-figure repair. If your floors are marble, insist on pH-neutral cleaner and say so at booking.
Porcelain and ceramic tile, standard in newer towers and much of Sharjah and Ajman, are far more forgiving — the risk shifts to grout, which stains and darkens and is the first thing a viewing tenant notices. Grout work is a legitimate deep-clean item, not something a regular hourly visit covers.