I'm young and trying to improve my fitness from almost zero having spent the last few months fighting a blood cancer. The bike came with excellent instructions and was easy to assemble. Standing at 5'7" I use the bike on second shortest height setting. The bike wouldn't be suitable for people with short legs, however if you had an electric drill one could make further notches to shorten the saddle another couple of inches. The seat has been designed for someone with a very large bottom and although not uncomfortable for someone stick-thin like myself, it wasn't at all what I am used to on a bike. I replaced the saddle with one of ordinary size from my local bike shop. This is easy to do as they follow a standard design.
The only part of the bike one cannot adjust is the distance of the handlebars from the pedals. The handlebars are quite far away, more so than you'd get on an ordinary bike as this one has to accommodate the largest of users. It's not uncomfortable, just not ideal. Also as one doesn't have to steer on an exercise bike (who'd have thought, eh?) using the handle bars isn't always necessary.
The display and settings are very good and the resistance settings at the highest level would give a good workout to even an Olympic cyclist, by no means easy! I wouldn't have thought so before I bought the bike, but the heart-rate monitor is indispensable. It works accurately (after you give it 15 seconds to count your pulse) and will prevent you from over-working your heart, which is my case is the muscle I'm truly looking to get fit.
The convenience of being able to exercise without having to rely on the weather, the danger of exercising in a busy city, or even having to get properly dressed is a huge bonus to me. The effortless way I can gauge my progress and performance is highly motivational too. I can't really imagine you'd get much more by spending 2 or 3 times this bike's price on another make or model.