I would highly recommend this apartment. The place was large and tastefully decorated with photographs from the owner. The room and the kitchen were clean and free coffee was offered. We stayed in August and the AC worked very well.
The location is very central and walking distance from everything (5 min from Piazza del Popolo and 15 from the Vatican), which is a true asset as public transportation is scarce and hard to navigate in Rome. The airport shuttle is less than 10 minutes walking as well (Piazza Cavour).