My wife and I did participated in this tour at the end of May. We had Peter as our guide.
The tour began promptly at 10:15 at Ann Frank's Huis (though it is not part of the tour).
Several weeks prior to the tour Peter sent us a number of articles about Amsterdam during the War. They were all quite interesting and a thoughtful way of getting us oriented to what we would learn during the three hour tour.
Peter is an expert in this part of Dutch history. The occupation, the resistance, the collaborators, and, what happened to the Amsterdam Jews are all part of the tour. Peter supplements the information with pictures from WW11. He showed us the pictures at or close to the spot where they were taken during the War.
The tour is limited to 6 people and there is a break of 15, 20 minutes along the way for refreshments and bathroom.
An added bonus is that the tour takes you across central Amsterdam, from one end to the other.
The tour concludes at the Jewish museum and Portuguese synagogue, so for those interested, it is a great opportunity to visit both these sites as well.
In summary, we would recommend this tour, particularly if you are interested in the subject matter, or, if you would like to learn about it.