You sure are active, but it sounds like you got the ball rolling with Zumba and you like the fitness efforts you've been making.
Best thing I have found for fitness, no time, and not much space needed for it: Royal Canadian Air Force Exercises. They give you a plan. You stick to it: it's a set of basic exercises you can do in one room, with just enough room to do a push-up, for example, and over a period of weeks, they gradually increase the number of reps until you are doing quite a few! I'd skip the jumping jacks if you feel they are too noisy and take too much space.