Welcome to Casa Sirena, a refined waterfront retreat in Marathon

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Home For Sale

103 52nd St

Marathon, Florida 33050

Monroe County

Waterfront: Yes

Community: Marameade Amd (45)

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$2,200,000 5 br, 4.0 bath 1924 sq. ft. 0.190 acres

Welcome to Casa Sirena, a refined waterfront retreat in Marathon offering comfort, privacy, and strong investment appeal. This five bedroom, three bath home includes a convenient outdoor pool bath and is ideally positioned with water frontage on two sides.Boaters will appreciate 100 feet of durable composite dockage, a jet ski lift, and a private boat ramp shared with just one neighbor. The home enjoys close proximity to Boot Key Harbor, with easy access to waterfront dining by boat, as well as a straightforward route to the Gulf via Knight Key Channel and immediate Ocean access. The surrounding Vaca Key and Boot Key provide a natural buffer, offering added protection from the elements.Outdoor living is central to the property, with lush tropical landscaping, a saltwater pool, tiki hut, and expansive wraparound patios accessible from all rooms. Inside, the open floor plan connects the living, dining, and kitchen areas, creating a comfortable and functional space. The kitchen is equipped with high end appliances suited for everyday use or hosting.Additional features include a spacious two car garage with ample storage, an extra washer and dryer, refrigerator, freezer, and workbench. The home is offered fully furnished and turnkey, ready for personal use or as a vacation rental. Privacy fencing, a security system, and gated dock and ramp access complete the offering.

Interior:
  • Bedrooms: 5
  • Baths: 4.0
  • Sq Ft: 1924
  • Year Built: 2004
  • Utilities: 
  • Fireplaces: 
  • Stories: 2
  • Heat/AC: 
  • Garage: Carport, Garage
Exterior:
  • Lot Size: 0.190 acre
  • Lot Dimensions: 
  • Waterfront: Yes
  • View Types: 
  • Yard: 
  • Siding: 
  • Roof: Shingle
  • Property Taxes: $10,953
  • MLS #: 619765
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Contact Information:
Beach Home For Sale in Marathon, Florida
Listing Agent: Lindsey N. Davis, Ocean Sotheby's International Realty, 305-395-2380, 305-712-8888 Listing Site, Listing Status: Active
Copyright © 2026 Florida Keys Board of REALTORS®. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Ad Number: 7673764
Viewed 2 times.
Updated: May 05, 2026

This property is a Home located at 103 52nd St, Marathon, Florida 33050, and is currently For Sale at $2,200,000. This Home has 5 bedrooms, 4.0 baths, 1924 sq ft.