It's important to look for a garden-level space that has windows and gets some sunlight. The effect of natural light on one's disposition and general mood can't be underestimated. As research continues into Seasonal Affective Disorder (SAD) and similar syndromes, we're learning more and more about the effects of Vitamin D and sunlight on a variety of health concerns. It's important to maximize the amount of natural light in any home you consider as the quality most central to setting the mood, both for guests and for your day-to-day life.
"You want to live in a place you want to live," as the saying goes, so make sure you'll be comfortable before you buy or rent. Static-cling film on the windows can help with privacy, and hanging a mirror on the wall opposite your window can make a room appear lighter and larger. And be mindful of the placement and direction of windows: Southern and western exposures are preferable, although the latter may cost extra in cooling costs come summer.