Enjoy the beautiful scenery and rest between long travels to inhospitable worlds. It is a full complex with hangar and landing areas, detention center, control center, medbay, lifts to move through the different levels, and the habitable parts, i.e. large penthouse facing east with terrace, and living quarters. It is unfinished, a lot of systems like defense turrets or camera surveillance are missing. There are a few rooms still empty, and you might find your own use to them or even reorganize the whole complex to your liking!
I had in mind the Bekenstein villa as seen in the Mass Effect 3 Kasumi mission while building this. The view of sunrise from the penthouse is nice too!