For my first visit to Poland, I had the great pleasure to be guided by Marta into the city center of Gdansk, and I deeply recommand. Marta knows so much about this city and the Polich history, and manage to make it well balanced so that it makes the 3 hour tour very pleasant. Very good english, very clear and loud explanations, and very careful (she met us at the station as we were a bit lost !) At the end of the tour, I felt like reading more about Polish history and culture ! thank you Marta