You don't even need a whole dark room. You can get a kit that has a development tank about the size of a coffee cup. It comes with a dark bag. You need to pract

You don't even need a whole dark room. You can get a kit that has a development tank about the size of a coffee cup. It comes with a dark bag. You need to practice a little bit to learn how to get the undeveloped film into the tank by touch alone while in the bag but it's not super complicated. Once that's done the rest of the process is done outside the bag.