Sadly, I ran out of time to explore the Slovak Republic, something I hope to do the next time I go into Eastern Europe. So I can only attest to the Czech republic portion of this book. I found it extremely useful, especially in planning my trips outside of Prague, though it does contain a good portion about Prague. One of the best suggestions was to include a visit to Litomerice after the somber tour of Terezin. I didn't take the advice on booking ahead on my trip to Cesky Krumlov and spent about an hour finding a place to stay and I went late May. Not speaking any Czech beyond hello and thank you, I had a lot of trouble with the Czech train system, especially outside of Prague. I found the bus system to be better than the Czech train system since you could buy a ticket on the bus as you boarded and the bus drivers were friendlier to me than the ladies at the ticket windows at the Main Train station in Prague and in Cesky Budjovice (where my train to Cesky Krumlov was early and I didn't understand when it showed up, so I took a bus instead) Either way, it is extremely inexpensive to travel around the country, so at the very least take a few day trips outside of Prague, if not longer trips. I was lucky this new edition came out months before my trip. Another great guidebook by Lonely Planet. As for an earlier review, Prague Castle counts as a museum, so its closed on Mondays.