Aww, too bad. If I could choose a habitat type to live in, I'd pick a giant Island Three type colony every time. 
Don't know if this still up to date, but in his book The High Frontier, O'Neill wrote that it is conceivable that a cylindrical habitat vessel could be up to 4 times as large as his Island Three design. That would basically make it about 32 km in diameter and 120 km in length. Now I know that such a cylinder would have to be way shorter to remain stable, so let's make it only 16 km long (at which point it basically may as well be an oversized Torus with an inner diameter of 0 meters). Sorry, getting carried away here, but imagine living in such a thing!
EDIT: One serious problem I see with such designs (or any other designs that have windows at the bottom of the simulated gravity well) is, how would one keep the window panes from getting covered up by dust particles and other dirt? I seem to recall reading a blog post by someone who suggested filling the window panes with water, but IMO that would still leave them susceptible to sedimentary deposition over time. Or maybe you'd have to build a fleet of window cleaner drones to give the window panes a good scrubbing every now and then.
Don't know if this still up to date, but in his book The High Frontier, O'Neill wrote that it is conceivable that a cylindrical habitat vessel could be up to 4 times as large as his Island Three design. That would basically make it about 32 km in diameter and 120 km in length. Now I know that such a cylinder would have to be way shorter to remain stable, so let's make it only 16 km long (at which point it basically may as well be an oversized Torus with an inner diameter of 0 meters). Sorry, getting carried away here, but imagine living in such a thing!
EDIT: One serious problem I see with such designs (or any other designs that have windows at the bottom of the simulated gravity well) is, how would one keep the window panes from getting covered up by dust particles and other dirt? I seem to recall reading a blog post by someone who suggested filling the window panes with water, but IMO that would still leave them susceptible to sedimentary deposition over time. Or maybe you'd have to build a fleet of window cleaner drones to give the window panes a good scrubbing every now and then.