Unable to exercise in apartment...

Calisthenics. Do push ups, dips, pull-ups. All these things are pretty much quiet.
- You could have an amazing chest and back workout with just different variations of push-ups and pull-ups.
- Biceps; some dumbbells and don't smash them on the floor.
- Triceps; dips, dumbbells, military push-ups.
- Shoulders; dumbbells, planks, push-ups.
- Legs; squats, lunges

You can do anything (y)

Tap dancing! :laugh:

Ok, seriously, it sounds like outdoor activity is going to be your thing. Hiking, running with a stroller, biking with a baby/child seat or cart, or just running around a playground.