Example below: The wires need to run up behind the wall to the ceiling (see image below). A return was created between two existing walls (you will need to create two columns) - through which you can run the wires if necessary. The screen is hidden in the beam above the painting. In the foreground of the photo is another "beam" which actually contains the projector. It has an access panel again covered in the mesh and there is a flap that can be removed or opened/closed when the projector is in use. US is way more advanced, so I believe other Houzzers can step in...

Can you use an over-the-door version to avoid this issue?

Hi. Please contact us if you are keen on formal advice. From what little you have commented, I am inclined to imagine you are not up for a 15 bed house or resort. On the contrary you would be looking at more of a dormitory hostel for travellers with all amenities. There are several such hostels in Europe and US which I have used personally, so I can probably help design something similar. If you have unlimited land and budget of course you could build anything!

Hi Farooq, you should go for wall paneling on that wall with a concealed door. The wardrobe can be a part of the unit in front.