This is in the lower level of my house. I had the ceilings built at 9 feet. I had hoped for catty-corner shooting so I could get a bit more than 20 yards but the furnace room is in the way. So, my max shot is 13 yards. (The exercise equipment now resides with my 33-year old son.)
There is a large window to the target's right of the target butts. I have a large foam butt in that spot.
I went 6 years with no holes in the dry-wall. Then, while setting up a different kind of bow for my son about 3 weeks ago, a D-loop came untied -- oops! We had to hunt down that arrow even though it was shot from only 7 yards! It missed all the butts, went through a box on top of the butts and stuck an inch or so into the drywall.
My wife has no interest in the box so our secret is safe!
I can't imagine life without an indoor place (and outdoor) to shoot at home. I mess around on the "range" muliple times a day. When I get a little stressed out (or a lot, which thank-you Lord, is rare these days)I go to this range and shoot a few arrows. I've even gone down at 2-3am to get some things off my mind. It works every time!