only a moment:
I sleep on the mattress on a cloud and wake up relaxed and rested on. Significantly more relaxed than I have ever slept on my much more expensive innerspring mattress.
The packaging was very good (rolled, vacuumed in a sturdy box) very quickly and delivery.
An unpleasant odor is not noticed.
Of course I can after a few days nothing about the durability say but that's ultimately matter. For the price you can afford it, every few years to change the mattress. This (necessary) change is a easier than the (equally necessary) change at a 500 euro mattress.
So if (like 46% of the population) sleeping on a mattress that is older than 10 years, let him here only access courageously. It is a cheap and very worthwhile investment :)
