We are 6 friends planning trip to Lisbon & Porto and sights in between for 2 weeks. Have been advised to skip the Algarve, not interested in beaches. Would like to rent house/apt for 1 week in Lisbon & do day trips to other areas. Same in Porto. Is that practical to do? Can anyone suggest small tour or driver to take us to Duoro Valley wine area? In Lisbon can we get to other historic sites by train or bus? Also any recommends on driver in Lisbon to take us to areas outside of Lisbon. Would prefer not to do large group bus tours. Thanks!