It doesn't actually use steam to dry, but it does have a steam cycle for drying to get wrinkles out. It uses condensation drying so it can be ventless. It dries the clothes with heat and the condensation is collected and drained periodically. It takes a long time because it uses only the 110V (regular dryers use 220). Its drying capacity is only half of what it's washing capacity is, if you overfill it that will add to your dry time. We wash frequently as I got rid of all excess clothes so that isn't an issue here.
We love ours (same model) as we did a bunch of research on all the options before we bought it and knew it would take longer than separate washers and dryers but we thought it was worth it given the benefits for us. We love the ventless option because we could put it on our mainfloor in our bedroom (where the clothes are) without having to install a dryer vent. Also, realistically it took us several hours to get downstairs and change the load over so we come out ahead in the end
The idea of putting stuff in dirty and not having to bother with it until it was ready to be put away was MORE than worth the long cycle length. Did I mention I don't have to remember to toss the wet clothes in the dryer? Yeah, I love that!
And, I challenged myself to fill all the (6!) laundry baskets I no longer have laying around with clean but not yet put away stuff with things to be decluttered. Good incentive to get rid of things
I don't know that this system would work for everyone, but it has saved me a ton of time and space. Two things I never have enough of