Our experience: a week stay as a family of four.
About the apartment:
Very good location (3 minutes by walk to Vatican Museums, 3 minutes to metro, bus stop just across the street), even closer to self-service Carrefour express open 7days/week and a food market full of fresh veggies & other local specialties. Definitely outstanding standard (big, nice and very clean apartment, well equiped) compared to other apartments we have rented in European big cities. Despite a busy street next to the apartment, the windows allow to sleep without being disturbed by the noise. Air Condition in the sleeping rooms permits to sleep with closed windows.

About Paola: we can only repeat what we said in person when leaving the place. Paola resonded very promptly and comprehensively to all our inquiries prior to our arrival (arrival instructions, preparation of extra bed for our older child), welcomed us with a ready-to-made pasta (very appreciated after the travel) & a bottle of wine and reminded us on the hints around Rome during our stay (e.g. free entrance to museums on 1st Sunday of the month). There is plenty of local tourist information in the apartment (e.g. city maps, guides, recommended places to eat in the proximity).
To sum up - a place to recommend, definitely above standard and you will be in good hands!!!
Hope this helps in making the choice for those who plan to travel to Rome.