My wife and I are in our seventies, my wife cleaned a four bedroom house in one hour, I helped her but basically the result was seen in the dirty water and the clean carpets. I have seen reviews about having to change the water and the fresh tank often but I did not think if was an issue. Furthermore cleaning the appliance was easy and quick, no screws to remove. An attachment for stairs would have been useful but we knew that was not included however the price was very reasonable. Finally, this product was supposed to take fours days for delivery but it came after two.