This was a great tour, with limited time in Washington we were able to see all the sights and the guide was very informative.
Great tour to briefly see most of the attractions in Washington DC. The bus was fairly cooled down although a little bit worn-out. The driver was knowledgeable but the sound system was distorting a lot of information he was sharing with. The pick-up point was about a 30 minute walk from our hotel which wasn't too pleasant to walk through some of the shady areas of DC.
I have tried other tour operators and they all seem to be within the same level.