Renting a place doesn’t mean that you can’t turn it into something that suits your personality more. There might be restrictions, but you can still make something out of them.
Find out what you can and cannot do. Read your contract first to be sure that you do not violate anything. Otherwise, you’d need to pay a penalty
If you are going to hang things on the wall, make sure that you do so without damaging them. You can use tension rods for your draperies instead.
Instead of hanging pictures, display them on frames instead. You can also resort to house plants, cushions, and various knick knacks to decorate your home.