Despite initial reservations upon entering our very small, very dark room, we had a surprisingly lovely experience at Hotel Corona. The location is solid—15-20 minutes from Trevi Fountain and right next to pharmacies, grocery stores, restaurants, gelaterias, and more. Make sure to check out the church right down the road (Basilica Papale di Santa Maria Maggiore). Our room had a beautiful and spacious terrace overlooking our quiet but alive street. The staff was, for the most part, friendly and helpful. The best part was the included breakfast where we started every morning with a fresh croissant (flavor baked to order) and cappuccino.
My only complaint would be the shower/bathroom situation. The whole bathroom *is* the shower. The drain is awful, so the whole room just floods. But it was a small price to pay for an otherwise enjoyable experience.