Interior Design for 3 floors Duplex house

I am in need of an interior designer who can help me create a modern and aesthetically pleasing design for my 3 floors duplex house. The ideal candidate should have experience in designing modern spaces and be able to work with neutral colors. A focus on aesthetics is important to me and I am looking for someone who can bring creativity and style to the project. The space should also be functional and maximize the available space.