I was visiting Warsaw in June, 2016, but had very limited time there and so wanted a tour that would give me a good, quick overview of major sites and information. I booked these guys and their retro car tours because I thought the car aspect would add a certain flavour to it - and it did.
These guys are absolutely fantastic. On time, efficient, attentive, flexible and accommodating to special requests (I had relayed a couple on booking and they had them all noted and covered), very knowledgeable - and just plain fun to boot. And if you are good you might get a special treat from. Certain stashed bottle!
My guide specific guide was a young guy called Konrad, but his co-worker (boss?) Rafal was also present with another touring couple for part of my tour. I can particularly commend Konrad as my guide - just excellent. Knows his stuff, affable, friendly and makes the whole tour a very relaxed, enjoyable and informative event. Rafal I did not have a lot to do with but I imagine he would be the same.
Very highly commended if you don't have a lot of time and need a quick overview; very highly recommended even if you have a lot of time, because it is a great way to experience a great city. And gives you heaps of information in a fun and quirky way.
Of, and I also booked them the next day for an airport transfer - just as good as the first time!