I would mostly recommend this tour for people who are, as I was, on a sort of "Chopin pilgrimage". The time spent in Zelazowa Wola was a bit short (because the car ride takes more than 1h from Warsaw), but at the same time there aren't so many things to see there - although the parc is very beautiful. The church is much bigger than I expected, unfortunately it was closed, so that only a peek on the inside was possible. Martin was a very nice guide - not a Chopin specialist, but someone it was very easy and agreeable to chat with about many aspects of Polish culture and history.