When looking to rent a space (I am presuming to build a studio) I look for open, unobstructed floor space; I make sure there is a bathroom large enough to fill my businesses needs, and hopefully space fro a shower (though it isn’t necessary at first.) Also, check the location out very carefully. How accessible is it? Are there traffic concerns at different times of day? Is it in a flood zone? Oh, and of course, cost. Find out as much as possible before openning up shop because, its the little things that hurt you later.