Yes, I think it is as you write. My flat is about 130m2 and I use 3 different sockets for cleaning. The switch for clean water is not so big (it is bigger than for dirty water) but I never use it completely. When cleaning a flat with parquet floors, you don't need a lot of water. For this purpose, the water tap for dirty water is big enough. It is also enough for carpets. I clean each one separately because I want to clean the breasts after each carpet. The disadvantages on my side are that it is quite heavy and very noisy. But I use it once a week and not longer than 15 minutes.

Hello.
The cable is long enough to cover a large area comfortably. My flat is about 200 square metres and I empty the tank twice while cleaning the whole area, but I use a lot of cleaning solution for that.
It's true it's quite noisy but I use my headphones to listen to audio books while I clean so it's all good :)