This depends entirely on the kind of space you have and your tastes. But as a thumb rule, for compact bedrooms, a wardrobe design that does not take up too much space is ideal. Sliding wardrobe designs are great for compact spaces as they are seamless and don’t need clearing room to open doors. Also, in such a space, go vertical, so a floor-to-ceiling or wall mounted closet are also great options. In a large bedroom, anything would work as you would have the space to go with almost any kind of design. A walk-in closet is a great idea in large bedrooms.