HI there Maribor, we have one for over a year now and are happy with it and have had no problems. They do recommend you only use dishwasher powder (tabs may be allowed but liquid isn't), some smaller shops only seem to sell the tablets.
They're a bit trickier to install too (for me anyway). If you're getting it for an integrated kitchen let the kitchen people know.
Having the two separate drawers is quite handy and neater than the usual dishwasher. I've also seen one in a house where it was installed about 3 feet above the ground - saves alot of bending when loading/unloading.
Hope you find this useful.