Welcome to Blue Island Rentals, where we specialize in providing exceptional short-term rental experiences in Marathon, Florida. With a background in finance and a passion for hospitality, I founded this business to offer travelers a seamless, comfortable, and unforgettable stay in the heart of the Florida Keys.

Before launching my short-term rental business in Marathon, I spent years managing high-rise condominiums in Miami, overseeing everything from guest relations to property maintenance. My degree in finance has been instrumental in ensuring smooth operations, handling all accounting, budgeting, and financial planning for our properties. This experience has allowed me to provide a well-balanced approach to property management—combining luxury, efficiency, and top-tier guest service.

In Marathon, I personally handle all aspects of property maintenance, guest satisfaction, and financial management to ensure each stay exceeds expectations. Whether it’s a last-minute request or a long-term stay, my goal is to make your time in the Keys stress-free and memorable.

Dennis Collazo
Dennis Collazo

Growing up, I spent countless days exploring these waters, and now, after living here for the past three years, I take pride in sharing this paradise with my guests. As an avid traveler, photographer, and freediver, I understand the importance of a well-curated stay—one that blends comfort, convenience, and local charm.

With seven beautifully managed properties, I strive to make each guest feel at home, whether they’re here for a relaxing getaway or an adventurous escape. I speak both English and Spanish, ensuring clear communication and a personalized experience for all.

From the moment you book, I’m here to make sure your stay in the Keys is everything you envisioned—because your vacation should be as stress-free as the ocean breeze.

Let’s make your next trip unforgettable. Welcome to the Keys!

Our First Rental

My first property listing was Blue Breeze, a 4 bedroom 3 bathroom duplex unit located in the heart of Marathon. It was purchased by my parents and I managed it while going to college in Miami. I would drive down each weekend when I had bookings to make sure it went smooth and did that for 6 years before I moved down to Marathon. I was one of the first listings in marathon to offer lots of great amenities like bicycles, paddle boards, and kayaks which was a unique thing at the time. I focused on high quality service and guest needs over all else to start this business and grew it from there!

Our Local Recommendations

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