There were only three of us on this tour in mid September, and the tour guide was personable and well informed. He also picked me up at the Vasa Museum instead of my hotel, which was appreciated. We expected to see the inside of the palace on Gamla Stan, but it seemed that we ran out of time, which was disappointing. The country palaces are spectacular!
My wife and I were the only two on this tour, so it was private and the tour guide shared a lot of commentary about Swedish life that we otherwise might not have heard. The Nobel Museum is not to be missed.