I live on the 5th floor and have 160kg of weights + barbell on my balcony. Got that during corona when all the gyms closed. I do squats, deadlifts and overhead presses.

I mean, I wouldn't do it if the building (and the balcony) isn't a modern overbuilt masterpiece.

The only drawback is that I really need to put the weights gently otherwise I'm pretty sure neighbors would complain.

Putting the weights down gently also gives you a better workout. Slow and controlled motions :)

Nonsense, just get rid of your couch / tv area. No distractions :)

I rent a garage with a couple of friends and we built a home gym in it. A little rough during Chicago winters, but it's been nice.

a 25 lb kettle bell will do wonders - but like anything powerful caution is advised:

https://www.youtube.com/watch?v=cKx8xE8jJZs