I (female, 34 years old, 165cm) have had it for a good six months now. I am very satisfied. The resistance levels are good. I don't ride at the highest level and it's nice and strenuous. Very easy to use and easy to store in a corner when folded.
However, if you're a cyclist, then it - or any folding bike - is not for you. At least that's what the experts say.

I have had the Tretmann home trainer (69-year-old woman) for almost 6 months. I am very happy with it. It is very stable, but doesn't really take up much space. I have it in the living room, so I use it almost every day when I'm watching TV. It's also easy to move if it gets in the way. The height-adjustable seat is very comfortable and the manual adjustment options and the displays on the screen are perfectly adequate for me. I think the value for money is great. I can highly recommend the device. I didn't assemble it myself, so I can't comment on that.