No. The bed's own slats do that job. The mattress lies directly on them.

Yes. There are gaps between the segments, and the space under the bed is open, so the moisture from the night can escape downwards. And because the bed only stands on legs at its ends, you can get the vacuum cleaner in everywhere underneath it.

A little firmer than a classic slatted base, but not hard. The slats give slightly. How soft it feels depends mostly on your mattress.

The frame is a little larger than the mattress: about 15 cm on each side and 20 cm at the foot end.

Yes. Segments can be added or removed, and the same goes for the nightstands. I make the new parts for you in the workshop.

Most beds creak where a slatted base shifts in its brackets or a screw works loose in the wood. PENTOS has neither: frame and base are one piece, and the tension rods pull all the segments together into one solid unit. If the wood settles over the years, the nuts can simply be retightened.

Yes, several in fact. Nothing is screwed into particleboard that could tear out. To take it apart, you loosen the nuts and slide the segments off the rods; to reassemble, everything goes back together in the same order.