This was a charming walking tour that my partner and I very much enjoyed. While billed as a WW2 tour, the story's that are focussed on cover history beyond just WW2 and includes items relating to the Soviet era following the conclusion of WW2 as well.
Our guide was very knowledgeable about the stories that he was telling us and the places that we were visiting and was very relaxed and personable, allowing you to feel very at ease having a conversation with him.
The tour includes a meal and the restaurant/pub that we ate at was lovely, it had a nice atmosphere and the food on offer was very tasty. We stopped for a drink at each subsequent location and our guide introduced us to the locally popular version of cola - kofola, which was a nice bonus at our 2nd stop.
The tour is very unhurried, so there is plenty of time to ask questions and take in the sights around you and the walking is sedate and easy, so is fairly accessible for people.
Personally, I would recommend taking this tour early in your stay in Prague as our guide was able to provide us with lots of suggestions on places to eat or visit during our stay, and was great at introducing us to the tram system in Prague, so making this an early activity on your trip means that you get a good amount of local information that you can use for the rest of your stay.