If all you need is a light-weight guitar that you can take anywhere and practice to your heart's content, then get this guitar!
I'm a big fan of the Traveler guitars and this one is no exception. The Ultra-Light Steel-string Guitar will quite literally be the lightest and quite possibly the smallest guitar that you will see out there. It's also "ultra light" weighing in at less than 3 pounds (hence the name of the guitar I suppose?).
If you can, I would highly recommend trying this guitar out for yourself and seeing what it's all about. I bought it mainly for space reasons and for the ease of traveling with it when I have to move (being a student, I practically have to move every year or so). It's definitely worth it at the price that it's set at.
Traveler Guitar has very much lived up to their name and continues to make excellent products such as this!