I've struggled through this myself and came up with a few simple exercises to keep me from feeling sluggish due to lack of exercise when I'm away from home. I've tried and tested them myself so I know the work. So I was thrilled when SACO asked me to contribute to their new workout guide for people staying in hotel rooms, serviced apartments, etc when away from home.
You can find the entire guide here:
http://www.sacoapartments.com/blog/how_to_keep_fit_when_away_from_home if you scroll down a bit you'll find my contribution, but make sure you read the others as well!
I would have loved to have included some photos, but as most of you know things have been really hectic and I (& my family) haven't been very well either!
Let me know what you think & tell me if you have any go-to travel exercises of you own!
Stay safe, x