DISCLAIMER: this response is based largely off my recent experience interviewing at Georgetown, so take it with a grain of salt. I applied to both schools, but got no love from Cincinnati. Still awaiting final decision from Georgetown.
Ive only heard good things about UC, so you def. cant go wrong choosing them. They have a good rep in the medical community, and in Cincinnati, they are the only game in town so youll be the only med students rotating in their affiliated hospitals (a good thing).
I was somewhat underwhelmed by Georgetown on the interview day. Here are some random thoughts (remember your grain of salt):
Gunnerism: Ms. Sullivan estimated ~15% of the class are gunners. She comes across as a very honest and straight forward person, but I would wager that she has an incentive to underestimate that figure a bit. So I got the feeling that >15% of the class are gunners, and the student tour guides were constantly on the defense about the gunner reputation. Not good form, IMO. Made me feel like its an unduly stressful place during MS1 & 2.
Cura Personalis: 99% of medical schools already abide by this philosophy, and to me it is a red flag if that is being used as a selling point by both students and faculty. I just didnt see why this idea was novel or special, and it bothered me a bit when students cited it as their sole reason for choosing georgetown. You can abide by this philosophy at any MD (or DO) school, and I believe most students do.
Clinical Training: You will get smoked during 3rd & 4th year at both schools, and will be well prepared for residency either way. I wouldnt put much stock in the superior clinical training claims, as every top 50 school will absolutely tan your hide in years 3 & 4. Read the match lists with caution. You can match into Derm at Mass General from either school if you put in the sweat.
Name factor: If it matters to you, youre grandparents will recognize georgetown more readily than UC. However, PDs wont discriminate between the two when youre applying for residency. Both are solid, and USNWR gives the nod to UC in both ranking categories (difference is arguably negligible, though).
IMO, the only real upside to georgetown: Opportunity of rotating through Walter Reed (not guaranteed though) and living in DC.
Id pick UC, but youre definitely in a good position with this dilemma. Good luck and congrats!