Our house is a 600 square foot 2 bedroom bungalow. My husband and I have converted the basement to a bedroom for us. There really is not a lot of room to "get away" in the house. I have however bought a pair of cordless headphones for my 12 year old son, and you are right, maybe I need to use them too sometimes!
I don't like sending them downstairs to my room because they trash it. Likewise, if I spend too much time downstairs, they get "busy". Our property is about 30 feet by 60 feet, not exactly a sprawling ranch. I can't let them outside unsupervised, just the way the deck is built and such, they "climb" it.
The weather has been so nasty lately, it is impossible to get out regularly, hopefully that changes.
My mother used to bring her supper to the bathroom and lock herself in to get a break from myself and siblings!