After about 20 minutes, we smelled a strange odour all over the flat, especially in the kitchen. It was the rancid oil and remnants of dirt that had collected on the furniture.
In the kitchen there was an ancient, very cheap set of cutlery and dinner plates (everything was kept to a minimum). The fridge worked like an oven. No air conditioning (we had 40°C, could not sleep). Owner was in the flat every day (separate part with leather wall in the kitchen). No outside place to sit in peace.