Welcome to 606 Grinnell Street located in the heart of Old Town Key West, this charming duplex offers the perfect blend of classic Key West character and flexible living opportunities. The first-floor unit features 2 nice sized bedrooms and 1.5 baths, while the spacious second-floor unit offers 3 bedrooms and 1 bath, complete with a private rear balcony overlooking the backyard oasis. Both units feature full sized kitchens with great dining spaces, as well as living rooms too. A welcoming front porch adds to the home's island charm, creating the perfect spot to relax and enjoy the neighborhood atmosphere. Step outside to your private backyard retreat featuring a sparkling pool for your relaxation, ideal for entertaining, time off, or enjoying the Key West lifestyle year-round. Whether you're looking for an investment property, multi-generational living, or the option to live in one unit while renting the other, this versatile Old Town property offers endless potential. There's a convenient side door entrance for the 2nd unit upstairs, while having a lockout door in the first unit if you wanted access to upstairs. Nice thought for Indoor or Outdoor Access to upstairs. Just moments from world-famous Duval Street with lots of dining options, historical seaport, shopping, and nightlife experiences.