What's been posted is absolutely correct I have clients ( regular ) domestic cleaners, hotels, residential homes, who have bought similar machines and better, which end up, very quickly in cupboards, because they discover it takes them 3 or 4 times as long with their staff and they can't achieve anything like the same standard.
If you really feel the need to have a small machine get the little Puzzi, it's still small, but can give a reasonable result, just don't let it run dry, or you will need a new pump.