600 3RD Avenue S 301 Welcome to effortless downtown living in the heart of St. Petersburg. This newly constructed five-floor boutique style condo in Castille Urbana. A third-floor unit #301 offers 3-bedroom, 3 bathrooms and a rare combination of modern luxury, privacy, and walkable convenience. Inside, you'll find two elegant primary suites with spa-inspired baths and custom Closet by Design walk-in closets, along with a beautiful kitchen featuring an oversized island that opens seamlessly to the light-filled living space and private Trex balcony-an inviting setting for morning coffee or evening sunsets. Thoughtfully finished with impact-rated windows, custom motorized shades, designer lighting, abundant storage, and a spacious laundry room, this residence is designed for effortless everyday living. Located in a no-flood, no-evacuation zone, it also offers one assigned garage parking space, and street guest parking for only $30 per year, a dog-washing station, a cozy community room with a fitness corner, and the advantage of a low monthly HOA of just $579. With streamlined amenities and lower ownership costs, you'll have more freedom to enjoy the vibrant lifestyle that makes downtown St. Pete so desirable. Step outside and, within a five-minute walk, discover acclaimed restaurants, neighborhood cafes, rooftop bars, boutique shopping, yoga studios, state-of-the-art fitness centers, waterfront parks, museums, theaters, and live entertainment. Whether it's a spontaneous date night, a morning workout, or a sunset stroll along the waterfront, everything you love about city living is just moments from your front door. This is more than a home-it's an opportunity to embrace one of Florida's most vibrant, walkable, and sought-after downtown lifestyles.