Kingsbridge Garden Circle condos are popular due to their excellent location, a wide range of amenities, and reasonable maintenance fees, particularly in buildings like The Californian and Skymark West. These condos offer a variety of unit sizes, from one-bedroom to penthouses, and feature amenities like indoor pools, gyms, party rooms, and guest suites. The buildings also boast features like car washes, bowling alleys, and tennis courts, depending on the specific building.