Agios Nikolaos is certainly less developed than other tourist resorts of Lassithi, such as Elounda or Ierapetra. It is more traditional. However, it is a pretty town to go for a coffee or for a walk. You will live the small port and the taverns around it. Also some gift shops have unique things to buy. I got a calendar with photos of Crete with me and a book with the history of the island. Just create more parking areas in the town becasue it was too tiring making circles to find a parking place.