I have a fairly small coop and the girls are only in there to sleep. I experimented with keeping both food and water in there for a time, but it was non-stop trouble. The water especially contributed too much to humidity and both were constantly spilling. I now have both outside in a small separate shelter I built just big enough to cover the water, feeder, and supplement hopper. It's about 3'X3'X18" with 3 sides and a roof. It provides a nice shelter for the girls in rain or wind as well. I don't have an enclosed run though - just a fenced area around the coop. I will often scatter a bit of scratch inside the coop though. It gives them something to do if I'm late getting the door open in the morning and also keeps the bedding stirred up.