What can be attributed to the shortcomings is rather a feature. Like almost all "bucket" even 3 times more expensive, it does not have cord winding, which is not convenient. There is no power adjustment, but this is even a plus for me personally. I always max out. Noisy, but this is a design feature from which it also follows that it is not possible to carry it on when it is with water (water will fly out) only to roll. Well, or turn it off on the stairs and turn it on. There is a removable filter and a sponge. It seems to sell has not yet bought. Cleans well, always vacuum with water.