Disclaimer: This is probably a very stupid idea, but I’m going to do it anyways, so I might as well try to get some tips on how to make it less stupid, right?

This is my current plan:

Get a wooden slate foundation and put it in a sturdy, minimalistic frame, meaning that the frame will just be 4 beams going around the slates, without legs. The mattress is going to be at least 140×220 cm

Build another frame that consist of 2 sets of 2 legs that stand against opposing walls of the room and are connected using a rectangular frame that sits directly against the ceiling and rests on the 4 legs. The distance between the 2 legs in each pair is as much as the length of the bed, so that it lines up with the frame of the bed.

Attach pulleys to the frame on the ceiling, above where each of the corners of the bed frame will go. Then attach 1 rope to each corner of the bed, lead it through the pulley directly above it and connect the 4 somewhere, where there will be a system that will provide the force for lifting and lowering the bed.

Now I have several things that I’d like some advice about:

1. Is it okay to build the frames for the bed and the lifting system out of wood? Will it be able to support the bed?

2. What are some options for providing the force for lifting and lowering the bed? I’ve thought about maybe making use of a counterweight and not using a motor at all, but I’m not sure what different options I have. I tried looking for different ways online but all I got was motors that do all the work. I’m hoping not to use a motor to keep it as silent and energy efficient as possible.

3. Directly underneath the bed will be an U-shaped couch that is easily big enough for the bed to fit inside the area between the back rests, but too small for the bed to fit inside the area between the couch seats. That means I’ll have to let the bed rest partially on the couch seats. I was wondering if that will make the couch cushions wear out quickly or not and I’m really not sure. I’ts a lot of weight, but if I put a sheet of wood under the bed, make sure the weight of the bed is evenly distributed over the wood, then cover the wood in cloth to prevent possibly damaging the wood, it will disperse the weight evenly over the couch, but I’m not sure if that would be enough to prevent wear on the couch.

If you have any additional tips or ideas on what I could do, any help is welcome.

Edit:

Some additions based on a comment:

I was planning to make something that the bed can rest on when against the ceiling, because even though I may know physics a little, I will never sit under my bed if it’s suspended by ropes..

If I use a sheet of wood to distribute the weight, I would construct some sort of wooden frame under the bed, that would allow for breathability and already help distribute the weight so I wouldn’t need as thick of a sheet of wood.

Edit 2:

Link to video showing the empty room: https://imgur.com/gallery/FEb6OkU

If you were to walk into the room through that door, you’d see the couch right in front of you. It’s put against the far right corner from where you stand, approximately covering the entire short wall to your right and covering 330 cm of the wall you’re facing. That is also where the bed is going to go.