Careful on the art work. Most walls, perhaps all, are concrete so rehanging won't be a matter of putting in a nail. Also, in our apartment there are a ton of windows and built-in closets/wardrobes so there is not a lot of available wall space.
I am not even sure how to hang things on concrete; reminds me of a college dorm where you weren't allowed to poke holes and everything was doublestick tape and fun-tac. Our serviced apartment has a couple of pictures that appear to be held up with velcro.
Since we knew we were coming, we stashed 2 weeks of clothes at the office and brought two weeks with us. Our washing machine is rather small, so we do laundry all the time anyway.