Luis was a great host. He was in touch with us before we landed to ensure he knew what time to meet us to give us the keys. His college Ferdinand met us and showed us around the apartment and gave us tips about the local area. He was also very pleasant. The apartment was completely true to the photos. It was absolutely spotless and recently rennovated but still maintains some of the traditional features, like high ceilings. The bed was comfy and each room has an en suite. Hot and powerful showers. There was also a 'secret' platform with two armchairs and books which you can access via a ladder - very quirky. Luis was also very responsive throughout our trip, with any questions that we had.
The location was perfect. Walking to distance to all the major sites - we didn't use public transport once. 20 min walk to Vatican. Perhaps 15 mins to Spanish Steps. Very good restaurants 5 mins away. I would most certainly like to visit this apartment again when I'm in Rome.