Miami Interior Design Studio

Founded by Miami-based Interior Designer Arianna Castro, with over a decade of high-end residential design experience, we create beautiful, functional, and timeless spaces while making the entire process seamless and enjoyable for you.

We approach every project with creativity, transparency, and a strong commitment to turning your vision into a home you’ll love for years to come.

Founded by Miami-based Interior Designer Arianna Castro, with over a decade of high-end residential design experience, we create beautiful, functional, and timeless spaces while making the entire process seamless and enjoyable for you.


We approach every project with creativity, transparency, and a strong commitment to turning your vision into a home you’ll love for years to come.

How We Make a Difference

Modern dining room with a marble accent wall behind a large oval dining table surrounded by white sculptural chairs. A sideboard with a decorative vase and mirror is on the left, and a large window with sheer curtains on the right. Minimalist artwork is displayed on a small shelf near the accent wall.


  • We prioritize your needs, respect your budget, and stay closely connected throughout the process.

    With a clear sense of what works, we guide you to a design that feels uniquely yours and looks stunning.


  • We create spaces that reflect your lifestyle, blending everyday practicality with timeless beauty. We never use cookie cutter designs.

    Our goal is simple: interiors that outlast trends, adapt to your needs, and spark joy every time you walk in.


  • We collaborate with a network of vendors, manufacturers and contractors trusted by Miami’s most exclusive residences.

    Our relationships are built on trust and shared standards of excellence to ensure a consistent, high-quality result.

  • From your intro call to final install, we work with integrity, transparency, and attention to detail, keeping you informed so the process feels clear, aligned, and stress-free.

Our Work

A selection of recent projects that showcase our design language and approach, uniquely tailored for every client, every home.

Lotus Palm Residence

  • Modern dining room with beige chairs, a wooden table, and a built-in sideboard near large window with white curtains. Pendant lights hang above the table, and decorative artwork and objects are displayed on the wall and sideboard.
  • Decorative entryway with a black-framed mirror, a cream-colored console table, a brown table lamp, a small stack of books, and a white vase with dried branches, against textured beige wallpaper.
  • Modern living room with beige armchairs, a white sofa, a marble coffee table, wall art, and large windows with curtains.
  • Modern neutral-toned bathroom vanity area with a large mirror, marble countertop, a small vanity mirror, and white textured chair, overlooking a bright room with windows.
  • Modern bathroom with vanity mirror, beige cabinetry, and a glass-enclosed shower with two showerheads and seating.

Elysee & The Roads Residences

  • miami luxury apartment living room designed by interiors by ac interior designers
  • elysee miami master bedroom design interiors by ac
  • Modern children's bedroom with a beige sofa, framed artwork, wall-mounted blue shelves with toys, and a mural of animals on the wall.
  • Nursery with jungle animal mural featuring giraffes, toucans, and monkeys, beige armchair, wooden crib, beige bed, and patterned tile flooring.
  • Modern bathroom with dual sinks, large mirror, bathtub, and glass shower enclosure.
  • Modern bathroom with a long mirror, a vanity with drawers, a freestanding bathtub, built-in shelves, and natural light from a window.
Explore More Projects

Featured in

Logo of Apartment Therapy, with a stylized flower shape and the name 'apartment therapy' in lowercase letters.
The text "the spruce" in gray font on a black background.

Design Services

Modern bedroom with beige bed, nightstand, hanging pendant lights, cream sofa, round coffee table, and wall art, with large window and neutral tones.
Modern bedroom with a large bed, green armchair, nightstand with flowers, white vanity with mirror, and pendant lights

Full-Service Interior Design

From partial renovations to full transformations, we bring over a decade of experience to create designs tailored to your lifestyle and needs, all while managing every detail to ensure an enjoyable, stress-free experience.

Inquire Now

Virtual Interior Design Package

Everything you need to redesign your home, including space planning, visuals, and a clear plan to implement with confidence. A designer’s vision thoughtfully tailored to your style and needs delivered virtually.

Explore This Package

What Our Clients Say

  • “Interiors by AC was incredibly easy to work with and did a fantastic job designing our home. The process was smooth from start to finish, and the results truly speak for themselves. I’m already looking forward to working with them soon!”

    Daniela
    Doral, FL
    Read it in our Google profile

  • “Loved working with Interiors by AC. The renovation was very smooth and clear from start to finish. Arianna has a great eye and made it feel easy.

    Highly recommended if you're looking for something special in your house.”

    Gerardo
    Boca Raton, FL
    Read it in our Houzz Profile

  • “Arianna is seriously the best! She is so great to work with and her designs are perfection. Loved working with her, and can't wait to collaborate with her again soon”

    Jenna
    Read it in our Google Profile

Schedule an Intro Call

Tell us about your project, and we will review and reply within 24 hours.

You can also reach out at:
Email info@interiorsbyac.com
WhatsApp Chat with us
Phone +1(786) 535 5186
We speak English & Spanish