There isn't a definitive answer to this question as it largely depends on personal preference. Some people prefer smooth, flat walls while others prefer textured walls. Some popular textures include stucco, orange peel, knockdown, and popcorn.
If you're unsure of what texture you want, you could always ask a professional for advice or look at some samples in a home improvement store. Once you've decided on a texture, you can then decide on a color or finish.
