Mario and his fiance were great hosts who were very responsive to any questions we had. The room was quite spacious and most importantly had air conditioning which was crucial in the August heat.
The apartment is approx a 15 min metro (train) ride from the main Termini and approx 20-25 mins door to door. Mario's apartment is approx 200m from the metro station. Pls make sure to ask Mario for his building number/letter as there are quite a few buildings in the same complex.