The metal bed is very solid and high quality finish, nothing creaks or squeaks. I have a bed in 1.40 m, my slatted frame is about 8 cm high, and my latex mattress 14 cm. Approximately 10 cm of the mattress look out so that enough padding is available and you will not trigger the frame, if you let yourself fall onto the bed. It was also very easy to set up by 1 person. I highly recommend this bed very.