We did the tour in Spanish, by scooter, with Sebastian and it was perfect. Initially we were going to do it by Segway, but the tour is more limited and following Sebastian's good advice we changed to scooter. A success in every way. We were able to go through part of the old city and then we went to the cathedral and the Strahov monastery to taste the beer that they only make there... a ride through the summer park, beautiful views of Prague.... good conversation. In short, we were delighted. Totally recommended.