If you love the water, and you like to ride bikes, this is a wonderful combo. My hubby and I stayed at a downtown hotel and parked at the Austin Dog Park nearby and walked down the Hike and Bike Trail to get to this attraction. You can also pay a small fee to park in the Hyatt Austin parking lot and the attraction is located on the lake behind the hotel. We opted for an hour tour, which was plenty for my husband, a non-cyclist; I could easily have gone longer, but I regularly cycle. He's 6'6" and I'm 5'3" on a good day, and Todd, who is the co-owner and super friendly, was able to fit us both. They slap a little timer on each bike so you know when to come back and handed us each bottled water (critical in the heat!), and off we went. You can go wherever you want, but they recommend staying away from shallow water or places where the duckweed is thick. If foliage happens to get caught in your rudder, you can stand up on the bike (requires very little balance) and just flick the stuff off the back. If you want a workout, you can certainly put my effort into your strokes, but we just meandered. We wore running shoes, but you could do this in flip flops or sandals as well. It was fun sightseeing from that vantage point and watching ducks and turtles up close. I'd go back and take our kids; great entertainment for the whole family. If you are going during the hotter months, I'd recommend you start when they open at 10. Afterwards you can head over to Snack Bar and have carrot cake French toast! They also offer Moonlight rides from 9-10PM as well as Bat Tours under the Congress Avenue Bridge from 7-9PM. Otherwise, they are open 10AM-9PM.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.