Hi, it is not noisy at all, super quiet except for the classes themselves and you can use headphones. I looked up the dimensions of the bike mat, it is 36" x 72" and the bike fits perfectly on it so I would say that is the amount of space needed. There is only one model.

I found your review super helpful. How much space does the bike need, and how noisy is it? I live in an apartment...

Also is there more than one model? If so which do you prefer and why?

Thank you,

Hi, sorry for the delay on responding...I did consider that hack and researched many bikes before getting the Peloton. If you look at my original Peloton review I think I discuss it. After researching I decided to go for it with the Peloton. To get as nice of a bike it would cost similar for the bike alone and with the Peloton cycle you get the large screen and the metrics (heart rate, cadence, resistance, leaderboard, calories) on the screen live during the ride. I knew for me those would be crucial to getting me to work out. I definitely feel I made the right choice but if cost is a factor the app with another bike can work well too. I hope that helps!

http://sippingandshopping.org/my-peloton-bike-alternative/
http://www.mypursestrings.com/peloton-app/

Thanks!