I used to stay in my bed almost 24/7 because I was mostly bed ridden from chronic mental and physical misery and I just wanted to hide from the world. I slept as much as humanly possible, too, because it was as close as I could get to death without the commitment. It wasn't really a comfort zone at the time, although I told myself it was, but more like the only perceived safe zone I knew of and could mostly navigate with minimal issues, although I was surrounded by triggers for quite some time, most especially in the work place. That re-opened the little box of horrors known as my past that I thought for sure I'd long since "dealt with". Holy shit, what a ride.
Now I'm no longer in that work place, nor in that same home, and have my whole living space pretty much just as I need and like it, but I still choose the bedroom more often than not when indoors as my preferred "chill zone". The hubby has his space and I have mine, and we often meet somewhere in the middle outside of our usual hang time and such.
I have it set up with a seating/tiny desk area (as opposed to the usual sitting in bed with the laptop tray), an alter space of sorts on top of a dresser with a few favorite things I need to see/use each day, the bed, wind chimes within ear shot, the pillow fort I require to sleep comfortably, eye masks for helping to ensure a deeper sleep, the fan for white noise to soothe the central nervous system at night, and my mini-apothecary collection of oils, potions, sage, and other various knowtions that help get me through the day and night.
I don't do much TV, so we never bothered to put one in here, turn off the wireless each night before going to bed, have a salt lamp and lots of plants, too, like aloe vera, spider plant, devil's ivy, snake plant, rosemary, and sage. One of the downsides to feeling livelier than I did in those days is now I can't take a nap as randomly or frequently as before. I have to be dog tired, ill, or in pain to be able to lay down and sleep during the day, and I would have never ever thought that would be an issue for me.
When the weather warms up, much of my comfort stuff/exercise stuff/fun stuff goes outside with me and that becomes my new favorite chill zone. I've been scoping out thrift shops for an old daybed or futon thingy to somehow rig up in my favorite spot near the stream, or a hammock, although I'm not very graceful....lol. My current outdoor beds are moss....natures carpet....the garden beds...grow, babies, grow!...and a few exposed tree roots perfectly placed. Sorry for rambling.
I say find comfort and be content when and where ever you can, and nurture the shit out of yourself every chance you get. Try not to start "shoulding" on yourself in the process. I found that to be a hard damn habit to break.