Valerio's apartment was indeed luxurious. We loved the artwork and tasteful furniture throughout. Valerio was very attentive when we had a minor problem with the air conditioning. The apartment is very spacious and its location is quite central. It's a bit of a walk to get to the Colosseum but certainly do-able. Since we had some elderly people in our party, we found it very convenient to simply call a local taxi company which picked up all 6 of us to deliver us anywhere we needed in Rome very quickly. We also used buses and the subway. There's a huge supermarket nearby and great indoor parking (we had a large van - no problem!) Highly recommended.