At the Harbour in Benidorm, there is a good sized walkway which overlooks Poniente Beach and the harbour with the boats docked here.
It’s a good spot to get some views over the Mediterranean Sea, over to Peacock Island and right up to the Grand Bali Hotel.
Boat trips are aplenty here, the most popular one taking you to peacock Island.
The Benidorm to Tabarca Island boat trip, Calpe and Alicante also depart from the port in Benidorm.
Around the Benidorm Harbour there are also various other boat and water sport activity that you can try.
When booking with these be sure to make sure they are reputable companies and not just some random bloke with a boat trying to make a fast Euro.