My boyfriend and I ended up with a private tour (booked through Groupon Honolulu for about half price) with Pono, who was really friendly and helpful. It was wonderful! It was a perfect pace (never felt tired or rushed), and showed us the major Honolulu tourist sites (Ex. Iolani Palace) as well as places tourists might not usually see (Ex. The apartment Barack Obama grew up in, a market in Chinatown). It was so nice to get out of Waikiki for an afternoon and see a little of the real Honolulu. The bikes and helmets provided were really nice and easy to use. Overall, I'd highly recommend!