I bought the rust in 90x200cm and slept at the start on a simple collapsible guest bed mattress and even that was a quantum leap better than most "luxury mattresses" on which I slept my life before, with comparable expensive bed bases.
The build quality is absolutely great, each part is exactly where it belongs, and everything makes a very stable and high-quality impression.
I weigh 90kg and arise in me when moving / standing / lying down no noise, where you will also enstprechend less forced in such a high-quality slatted frame to change the sleeping position sold for a high price as on the whole cheap products.
I am very glad I sleep on my purchase and with my new mattress as good as ever, I am absolutely thrilled!