There is something about a blank canvas or even just a new-to-you space that allows your mind to see things in a new light. I even notice it coming home after being away from our house for a few weeks!
Yesterday I went and did a thorough walk-through of a rental house we own (was one of my childhood homes -- my parents wisely kept our old houses for rental income when we moved from one home to the next twice during my childhood). Our most recent tenant moved out after 15 years there, so I had not seen the house empty in all that time. Of course it's always sobering to see the things that need repair or attention, but part of me wanted to get in there myself with buckets of paint, cleaning supplies, and some tools to do the work myself. (I may end up doing just that in another month or so!) There is a little part of me that always envies someone moving into a new place, for that excitement that comes with making a new space your own. I'm so glad your new apartment is sparking your creative impulses!