Product review (2 stars): Buy From Somewhere With An Excellent Return Policy
We read the good and bad reviews, and bought with caution from a local dealer with a 30 day return policy, including delivery and pickup.

On the pro side, you never have to load clothes separately into a dryer and it's compact, with room to install shelves over it since there's no stacking required.  We found the drying function to be totally fine, even with heavy loads including jeans!  It does take a long time to dry, but we had done our research and expected this.  The ventless drying didn't heat up our bathroom, by the way.

BUT, despite having our unit carefully installed, and having the installation crew come out a second time to make sure the machine was absolutely level, the machine is virtually unusable.  We installed the anti-vibration pads LG recommends.  We did not leave the shipping bolts on the back!  Yet it vibrates unbelievably, and makes an incredibly loud knocking sound.  If we press and hold the door while the machine is in its spin cycle (which is short) the loud banging abates, but this means that we have to be home, awake, and willing to dash in to support it in order to do laundry.  I believe the problem is with the door, and specifically the lower section of the door (LG, are you listening??).  But it's beyond what we or our condo neighbors can tolerate.  I also think that level of vibration would ultimately lead to other repair problems as well.

In general, this is a higher maintenance unit than some may be used to.  You really do have to wipe the lint out of it after every cycle, and follow the instructions about running a cleaning cycle and the like.  Still, that's a lot easier than going to the laundromat!

If space is really tight, or if you can't get the electrical work done to put in a 240 volt line, I think this machine is worth a try. Their manufacturing process must simply be uneven.  Some of these units must be fine if there are so many positive reviews.  But purchase it from somewhere that has an excellent return policy.

Other brands of ventless, 110 volt combo washer/dryers to consider--with a slightly smaller capacity--are Haier or Edgestar.  In the end, I didn't really want to deal with wiping lint out of a combo unit.  I'm also not sure that the technology is 100% there for these yet in terms of long-term reliability.  We do have the vertical space, so we returned the LG and bought vertically stacked, ventless, separate compact units from Bosch.  Alas, this meant I also had to have an electrician come in to do the 240 volt wiring.  The two Bosch units together cost us about $650 more than the LG combo machine.  If we had more money, we would have purchased the Miele models (which are less deep and would have fit more nicely in our bathroom) but saving an extra two inches for $1,000 over the already high cost of the Bosch was beyond what I could justify.

Good luck to all of you other small space dwellers out there.  I hope you find a solution that works well for you.