Possible Clues:

• Property along the ocean ... or a hint to the starts of 18-, 23-, 36- and 47-Across
• With 61-Across, homes that often have great views ... or a possible description of the starred answers?
• Coastal strip of land, and a hint to the starts of the starred answers
• Where to find promenaders, English, entertained by musician with bow
• Valuable shore property, and a hint to what the first words of 17-, 23-, 37- and 45-Across have in common