Marty & I in my writing shed
I actually do a lot of writing inside in a room that is my office/art studio area (I just took out the couch so I could bring my paint supplies in).
I consider this room my "administrative room" where I answer emails, blog, do bills, and submit work, but many times I write in here for 15 minutes or so, or in the morning before anyone is up.
My shed usually needs a little warming up, so I tend to do in there later in the day or after I've had my heater on for a bit.
I save my larger, more focused projects for my shed. Anything where I do *not* want to be disturbed.
If I write in the office, I will be disturbed. I know that.
The shed gives me much more quiet time and privacy. I usually will lose myself in there for a few hours. It's hard for me to want to leave. There is this certain calming scent when I walk into it that tells me it's time to write hard.
Again, I'm in my shed more in the fall, winter, spring as the summer there is a lot of everything else to do that takes me away from my writing.