The floor of an apartment is sometimes overlooked. It’s often simply a spot to lay out rugs and place furniture. In this 750-square-foot apartment in Monza, Italy , however, it’s a key element of the design by Studio Latino , the architecture and design firm founded by Irene Nocerino and Matteo Lattuada. The team chose a bold, fresh, and slightly irreverent sky blue color for the floor; it runs throughout the home and sets the tone for each space.

That choice transforms what is usually a neutral element into the starting point for an interior that isn’t afraid to play with color, even within the confines of a 750-square-foot space. A pink bathroom , playful furnishings, and colorful accents take center stage without needing to be perfectly coordinated: They meet, contrast, and interact, creating a cheerful, personal, and surprising atmosphere. This floor isn’t just a backdrop in this home.…