Strong permeating mildewy smell throughout all 3 floors of the apartment. MAY CAUSE HEALTH HAZARD. Could only stay for one night out of 5 nights booked (after a long flight with a baby and an 8 hour time difference, we did not have the energy to look for another accommodation and was hoping that the smell would subside after opening all windows and left rooftop door open, which did not help). Living room carpet not vacuumed, floors dusty, high chair was not clean, mildew smelling wet towels and rugs left in washing machine, mildewy smelling bed linens and towels. No sheets on guest room bed (covered with a duvet only. 3 floors, lots of stairs, not an ideal place to stay for families with young children and/or elderly. FALL HAZARD, which host cautioned us, as his son had a fall.