Location, location, location!
I have stayed in Rome (travelled abroad 4 times) each time I decided to stay near the train station and regretted it, this time, my family (wife, 2 daughters, and mother-in-law) stayed at this location (a block away from the pantheon (centrally located to all attractions. The experience could not have been better!
Super easy to find the apartment, no hassle with keys (they utilize an electronic keypad for entry). Also, the piazza the apartment is located has great restaurants to choose from (a great bonus for parents who want a date night, but don’t want to travel far).
Next time we visit Rome, we will stay here again!