It depends on what you want. If you want a natural look, go for a textured wallpaper. If you want something more flashy or colorful, there are plenty of options out there. But either way, I would recommend hiring a painter to do the job for you. It's not as hard as it may seem, but it can be tricky to get the hang of if you've never done it before. And trust me, the results will be worth it!
There's no definitive answer, as everyone's preferences vary. However, generally speaking, it's best to choose a wallpaper that is light and bright, as this will help to create a spacious and airy feeling in the room. Additionally, stripes or other repeating patterns can be helpful in making a small room feel larger. Alternatively, if you're looking for something more dramatic, consider a dark or bold wallpaper design. Just be sure to keep in mind the overall style of your bedroom when making your selection.