Via Matteo Boiardo 30Rome, Italy 00185 Phone: +39 06-9799-7045Fax: +39 06-9799-7045Toll Free: +844-382-2267 Hotel E-mailHotel Website Classification 4 Moderate First Class Commission Rooms Rates 8% 84 $77-$221 (USD) Hoteliers! Is your information accurate? Update Here Mercure Roma Centro St John Location & Neighborhood Next to Piazza San Giovanni in Laterano - 29 KM from Rome / Fiumicino airport.