Altea is probably my favorite little city near Calpe and we visited the old town twice because it was too lovely and cozy. If you're looking for a good place to eat and a super cozy atmosphere, Altea is definitely the place to go. The shops open around 7PM, so don't leave too early if you want to buy some pretty souvenirs or if you fancy going there for dinner.
If we're talking about dinner spots, I mustn't forget to mention Valencia. Although this isn't technically part of the 'Costa Blanca', we did visit the city and the food was amazing. There were so many vegan restaurants with amazing food, but as a Loving Hut Lover - see what I did there? - I really fancied a burger from Loving Hut. Sadly, there were no burgers but there was a huge buffet with burgers, sandwiches, lasagna, Thai food etc. It was literally vegan food heaven. So please visit Loving Hut when you're in Valencia!
The other thing we did in Valencia, besides eating, was viewing the masterpieces Calatrava designed. My brother studied architecture and was, and still is, a huge fan of Calatrava. His buildings are indeed amazing and I was really impressed.
What is your favorite city on the Costa Blanca?