From Lisbon: Take the A1 / IP1 highway towards Porto until the exit for Viseu / Coimbra at about 200km.
Follow the IP3 until the exit for Spain / Viseu (A25). After the exit for Viseu Sul / Nelas continue ahead towards Viseu.
From Porto: Take the A1 / IP1 highway towards Lisbon and follow for about 50 km until the Aveiro/Viseu exit.
When you arrive at Viseu, follow the signs for the Centro Historico and for the Puerta do Soar. Palacio dos Melos is on Chao do Mestre Street.
Hotel Palacio dos Melos , Rua Chao de Mestre 4, Viseu, Beiras, Portugal