Product review (3 stars): Better think twice
We live on the 2nd floor. Original washer/dryer in basement. Need I say more?  This saves wear and tear on our knees, so we are very grateful for such an invention.

It is light enough for one guy to carry upstairs.  We vented it out the window for now, in winter we will vent it inside.  Just know the 'hookup' on the back is 3 inches and not 4.  It does come w/some kind of plastic vent pipe thing and you can hook up something to that.  It also comes with brackets to put on the wall in case you want to do an 'over/under' arrangement with a washer.  Be aware it will pull on the electricity more than say a vacuum cleaner would.  Whatever will go for a normal load in the sonya washer will fit as one load in this larger dryer.
EDIT...Well, unfortunately, the electronic panel in it bit the dust, quit heating. It would cost $100 for a repairman just to come to my house, then more $ for his time to figure out what would be exactly wrong, then he would have to order the part, come back for another visit.  End of story, is that I finally just had to pay a higher price and get the one from Sears.  The panel is not made very well, which means cheapo electronic circuits.  Now if you are married to a repairman....it would be a great choice.  Really wish it hadn't fizzed out as it worked good when it WAS working.  Didn't take long for it to go out, only had it for a few months.