James is a great guy and made us feel at home even before the trip started. The apartment a bit uphill, just behind the Roma St. Pieters railway station. Best way to commute is by bus 62 from the railway station to Termini, right through the city centre. Vatican City is a 10 min walk. Not much in the neighbourhood though, although there are two 24X7 Carrefours. We came in from Florence by Flixbus that dropped us off at Tiburtina, from where it is an easy 20-min single train ride.