time to workout and space

Hi,in a few months I will move with my brother and I'm afraid I will not be able to have a healthy life.We will live on the 4th floor and i don't think i will be able to do hiit or cardio, also he doesn't have the same customs like me and i am afraid that i can't eat healty.It's gonna be my first year at college and i will don't have time to have a job.I don't know what to do,any advice?

P.s:Today workout was awesome,i love strenght training.