Parquet Flooring or New Floating Wood Floor

I think it should improve resale price. At least to me, plank floors look a lot nicer than parquet. And I think light floors will make the apartment look brighter and more airy. Of course that also depends on your furniture and decor etc.

One thing to account for is the increased floor height. You'll probably need new moldings. Doors may have to be cut and the kitchen/bathroom transitions will change (and bedroom/living transition too if you don't do the whole apartment). You can use lower profile engineered floors to minimize that (I think they make them in 3/8") but then they probably cannot be refinished or just sanded once. That said, it sounds like it may not be an issue to you.