okay awesome you have coturnix.... now you're going to want to cover half of that run with something solid above the wire - Wifezilla's clear poly panels would work great. - still get the sunlight and all but have that protection. Quail don't tend to use housing when they are on the ground.
Suggestions : make sure the run isn't going to let water sit - quail in a wet soupy run = disasterous. Since you have the area where that pool was - fill that up with sand for them to have a huge sand bath area. a pile of loose straw in one corner of the run, and plant them some runner perrenials and/or low lying bushes, or even just lone viney potted plants - for cover and play areas.
I have mine in a small mobile tractor type run that is covered with a wire floor (so I can move it with quail in it, but they are still running on grass as the mesh touches the ground) - they LOVE it.