PERFECT location. I walked past Trevi Fountain everyday on "accident" walking to get lunch and dinner. The apartment is also in walking distance to the Colosseum and the Pantheon + lively streets of restaurants and shops. I only took the subway to get to the apartment from the train and to get to the Vatican; both super quick rides. There was a major hiccup at check-in but Marimax was very communicative and accommodating. The bathroom is modern but had noticeable mold/mildew. Would recommend for short stay in Rome.