From Turim Oporto Hotel, you can walk to Livraria Lello (Harry Potter Book Store), Market Bolhao and all the restaurants nearby. A short taxi ride takes you to Dom Luís I Bridge, which is a double-deck metal arch bridge that spans the river Douro between the cities of Porto and Vila Nova de Gaia.
Note: Sometimes traffic can increase the time it takes to cover short distances in a taxi. Give yourselves plenty of time to avoid missing tour schedules.