I too, highly recommend Edgar and his Segway tour. Padalyn, myself, and my Mother did a tour with him and two others. He limits a group to 8 people.
His tour was great, however, that being said if you have bad feet or ankles take some (insert favorite pain reliever here) with you. Edgar's english is excellent. He takes safety seriously, and will teach you everything you need to safely get off a Segway in any situation. By far, in all my travels, this was one of the best excursions I have taken. You will see and learn things you cannot or would not on any other tour.
I had to dig deep and focus on the tour, as I was suffering from both my ankles being sprained and swollen very badly, in addition to both my knees being bruised and strained (un-related to Segway). Edgar taught me some tricks to reduce leg/foot discomfort while riding a Segway that were simple and worked. Even with the pain, it was a great 3 hours.
Edgar told us he is going to be taking some time off, and or is having someone cover him, as he is due to be a Father.