How far away is the gym?
You could probably just fit a barbell in but it would be seriously tight.
A few DBs would be easy for:
Push: Overhead/floor pressing, weighted push ups
Pull: 1-arm rows
Knee dominant: Bulgarian split squats with your rear foot on the bed, high rep goblet squats, all lunge variations
Hip dominant: single leg hip thrusts/bridges, 1-leg RDLs, Nordic curls.
Core: dragon flags, roll outs
Curls and overhead tricep extensions
I wouldn't bother bringing a barbell in and clog up the space. Save that for the gym!