There’s already a lot of great suggestions here but I’ll throw in some of my personal favorites!
Bee’s BBQ is a nice casual spot in OTR for food and drinks
If you find yourself in Kentucky, Otto’s has great brunch and dinner. The Covington neighborhood has lots of interesting food/drink choices as well
If you’re looking for a quick breakfast, there are lots of great bakeries in town. Brown Bear Bakery is excellent, as is Two Seven Two in Clifton (just make sure you get there early enough!). Sugar n’ Spice is a fun breakfast diner in OTR as well
I like Adriatico’s by UC’s campus for its pizza and sports bar environment. Goodfella’s in OTR has good pizza as well- they’re also open pretty late and the food is pretty cheap all things considered
Pepp and Dolores (Italian food) is my favorite restaurant, though their reservations get booked up well in advance
Quan Hapa in OTR has great Asian food
Graeter’s is a classic for ice cream, but Hello Honey has some of the most interesting flavors I’ve ever tried
If you’re interested in trying Cincy chili, I would second Camp Washington Chili as well as recommend the Skyline Chili location on Ludlow avenue in Clifton
There’s already a lot of great suggestions here but I’ll throw in some of my personal favorites!
Hope you have a great time in the city!