Alternative bike tour: the best of street art in Madrid

I booked this for myself, my husband and our 16-year old son and our Dutch friends, who also have a 16-year old son, and it was outstanding! Truly one of the highlights of our trip. Our Dutch friends loved the biking, as did we -- and we got to see streets and places that we might not have seen or visited. Javier is the "designer" of the route and he is a fantastic guy -- fun, knowledgeable, passionate about Madrid and a great guide. I would highly recommend this especially if you have teens who might want to be active and not visit one more museum and/or if people in your group have experience biking, good balance and would feel comfortable riding around a bustling city (although mostly side streets -- only a few times crossing really busy streets -- originally I thought this might even be fun for my parents but then realized absolutely not for my dad but my mom could do it because although she is older, she is an avid biker).