Hilton San Diego Gaslamp Quarter • 401 K Street, San Diego, California 92101. Hilton San Diego Gaslamp Quarter is a 2-minute walk to the San Diego Convention Center, and 5.4 miles to SeaWorld. The Hilton Hotel has an on-site restaurant called New Leaf which prepares delicious California cuisine dishes, breakfast buffet, lunch, and dinner are served. The hotel property has a fitness center with a gym, business center, and conference facilities. There is an on-site beauty shop and a dry cleaning service available.