My husband and I are signed up for the Warsaw, Budapest, Vienna & Prague tour in September and plan to spend an additional day on our own to go to Cesky Krumlov. I have read about the company PragueWalker but would like to know if others have used this company and recommend it or recommend another company for this day trip? Also, would you hire a guide in addition to a driver? We want to tour the castle and the baroque theater and plan to buy tickets for that so a guide would not be needed for that part of the day.