Construction very difficult

We use the bed as a travel cot and otherwise as little bed at Grandma's and were now twice so in holiday. The structure is really sweaty. Even if one keeps the correct order when folding up the side sections, it means far that they snap into place well. At the last holiday we were so far to an hour ago that we first had let her sleep in the crib one night with us the child, because we thought the travel cot was broken. Finally, when you try again around midnight it worked finally ...
Is it once, then stehts well (like a giant bed just happens to stands, is not a wooden bed). The mattress as a stabilizer is OK, but you definitely need another right, otherwise there will want to sleep a child.
Conclusion: we would not buy it again, because it's really a frustrating affair.