Had a great tour with Tomasz in Gdansk, Sopot and Malbork Castle.  He worked with me from my initial contact to help me arrange the tour, provide suggestions and tailor it to what I was most interested in.  What was really fantastic was as the day progressed he continued to tailor the tour based on what I liked and we were actually able to squeeze in a quick trip to Sopot.  He is fully fluent in English and of course very knowledgeable about the history and stories of the places visited.  Highly recommended!