I think the most important part, even beyond privacy, is that the fucking rod/bar/what ever is stable. If it breaks in the middle of the process, you are fucking lost, meaning potentially vegetable-lost.
I think a proper pull up bar might work, just don't take those you can put between a door frame, they are freaking risky. If you attach it to the wall with some proper screws, that should do the trick. You might check for how many KG they are designed to hold.
Maybe research before, If people experienced them breaking out of the wall before.
I will probably just go in the forest at night. The chances of someone beeing there are extremly low, especially when you leave the tracks and maybe even go a little further into the woods. Go deep enough, and your chances of getting found are almost zero. And: It's really easy to find a stable branch to attach your rope to!
Plus for me, I really like forests, I think they are more a home to me than stupid stone houses (speaking of atmosphere, not comfort). Maybe I will even feed some wild animals with my rotting flesh, yummi (kidding, there are only foxes, rabits, pigs and deers where I live and smaller animals).