Birth of an Outdoor Room

So, I found my dream cabin on Mt. Lucas.  Except it quickly became a nightmare.
One of the many nightmare episodes was that this was a duplex cabin.

My duplex neighbor is quite nice.  But he's a boy.

We can hear everything (and I mean everything) the other person does.  And since he has a one room efficiency, and I have a 2 room "one bedroom", I was way too close to him.  Our beds were 4 feet away from each other, with only 2 layers of drywall between us (no insulation).  And he had the habit of coming home between 11pm and 2:30am.  Sometimes (more and more) with his girlfriend.  Who isn't quiet.  If I was a guy, I suppose I'd just join in and masturbate.  But I'm not.  A guy.

The guy isn't an asshole.  He's just a boy.  Let's the toilet seat fall shut - I can hear it.  Slams the front door every time - I can hear it.  Drops things instead of placing things - I can hear it.  Scoots furniture (oddly frequently) - I can hear it.  On the good side, he doesn't blast his music or tv, and doesn't have really loud phone conversations.  And no yelling at the girlfriend.  Like I said - not an asshole - just a boy.  Who made it so I couldn't sleep.

It was so bad, I slept in my tent for 2 months, as far back in my backyard as I could get.
Back there, next to the bench.

Something had to give.

So, here was my goal:

But, given my budget, I thought I'd go for something more like this:

Yes, it's a chicken coop.  See, "Screened porch" was a bit hi-faluten to me.  Ok - really just high-priced.  But I really did like the small brick patio, row of big rocks and raised bed garden that were already in my yard.  What I wanted was no mosquitoes.  And a barrier so that deer, rats, raccoons, snakes, frogs, armadillos, foxes and coyotes couldn't get in while I slept out there.  So I decided what I was really going for was an Outdoor Room.