We bought this trolley four years ago and have been completely satisfied. That one side is "open" did not bother us because the security is actually given by the material, it is very thick and the lanyard are not demolished until today. Consider: it is about to see an almost exclusively lying baby, not a rampaging, herumtobendes toddler ;-) We also had only assumed that the bench is not worth its name, but I was wrong: Three years, she is already a bench in one of our children and does not even have to bent (it has also been one or the other adults put it) , Two caveats: 1.The Quest Ange (where no longitudinal bars go down, so the "open") interferes when to use it as Anstellbett, why we have them removed after a few days, the stability has not suffered under it absolutely, but this way you change not even just in three seconds for bassinet. 2. the roles to the device to be used as a bassinet extremely unstable and you should lean on no account on the edge as an adult.
The mold or "Fitzelchen" the mattress I can not confirm. I had also a changing mat are also on top of that reached in our bed, thus the small gap was closed, which is actually located between crib and parents' bed. The smell I can not remember unfortunately. After looking back to 4 years with this crib / Bank later so I was quite happy. At that time I already paid almost 180Euro.