Congrats on the KU Leuven acceptance as well! I can see why that would make the decision a lot harder. Honestly though, having two great options to choose from is a pretty good problem to have.
It’s also great to hear that the scholarship interview went so well. When the committee is welcoming, it usually says a lot about the overall atmosphere of the program too.
From what you've described, CEU still sounds like the strongest option, especially with the financial aid package. But I think you're doing the right thing by giving yourself a few days before making the final call. Sometimes the best choice becomes much clearer once the initial excitement settles down.
Either way, it sounds like you're in a great position. And yes, it would be pretty funny if we ended up meeting as classmates in the fall! Keep me updated on what you decide.