Product review (5 stars): Life-changing.
I was hesitant to buy something like this for years for fear it'd steam up the whole apartment.  It does generate some humidity but the forced air does as much of the work and it only raises the indoor temperature by a degree or two when the central air is running.  Setup is a breeze.  Heater unit seems to be a ceramic element and something like a large PC case fan so it's probably pretty safe but not necessarily childproof.  Things are now drying in a couple hours instead of sitting on my drying rack getting mildewed.

As both positive and negative it's pretty compact so space is limited - my Haier apartment washer is 2.3 cubic feet and when packed it ends up being two dryer loads in this thing.  Certainly makes it portable-ish for balcony or patio use.

It'd be nice to have one more hanging bar and additional racks for up top for hanging socks etc but all that is surely hackable.  I really want to try using the heater with a larger Origami closet I already own (once vents are added) and Ikea should really look into using something like this for a combination sauna/closet/clothes-dryer if the fire hazards of that brilliant an idea could be mitigated.

Note that during assembly you need to slip the cover over the bottom rods and the heater sits under it with the cone poking through.  I was expecting an open bottom or something like a solid board making it easier to replace the outer cover without taking it all apart.  Performance does seem optimized as-is though, just be prepared to sweep lint and hairs out of the bottom of the cover every once in a while.  Also remember to open the zipper after the cycle so the latent heat in the clothes can finish the drying process for you.

The other minor but very easily addressed gripe is the mechanical timer feels sturdy but the sloped knob is fiddly to grip with damp fingers - it'll probably loosen up and get easier once I've used it more than a dozen times.

This will save your life if you've gotten used to waiting 3 days for dry musty jeans in summer.