I booked this for myself as an active and slightly different way to explore Stockholm and was not disappointed. I arrived at the dock to find that there was a party of 8, including myself, ready to take to the water. We paired up in dual-kayaks (although a one-person kayak option was offered to us), and given safety advice, some basic technique pointers as well as life-jackets, splash covers and waterproof bags for valuables.
It was my first time using a kayak with a rudder/pedals and it took me a couple of minutes to get accustomed to this, but once I did, I found it a very useful control. Once we all had a few minutes to get comfortable in our kayaks, we set out in earnest.
Our guide, Magnus, was great - very friendly, and knowledgeable about the culture and history of Stockholm. He kept us well informed about each area as we passed through and welcomed further questions from the group, providing further information on topics ranging from local sports to hydrology and native wildlife. The tour benefits from the sheer amount of things to see and hear about in Stockholm, which helps make it a rich experience. The cherry on the icing for us on the day was the beautiful conditions: late-May warmth and sunshine, and calm waters.
For the experience, the price is very fair, and I would highly recommend to anyone who is able and curious.