San Diego Marriott Gaslamp Quarter • 660 K Street, San Diego, California 92101. San Diego Marriott Gaslamp Quarter is located near the San Diego Convention Center, Belmont Park, and San Diego Zoo. SeaWorld is a short drive from the hotel. Soleil @k, Marriott's on-site restaurant, features modern, fresh, comfort food dishes. Enjoy the great, panoramic view at the ALTITUDE Sky Lounge upon the 22nd-story floor. A fitness center with a gym and conference facilities are on the hotel property.