It depends on your preferences and intents. Each region is unique and attractive in its own way.
Kyrenia, Iskele, Famagusta, and the resort villages located nearby are most family-friendly and suitable both for living and for vacations. There is a great variety of wide sandy beaches with gentle entrance to the sea and many prestigious schools for education.
Villages located at some distance from large cities are most suitable for a calm and quiet life. If necessary, it is easy to get from there to the needed city infrastructure. Near Kyrenia these are Lapta, Karsiyaka, Tatlisu, Chatalkey, Ozankey, Esentepe, Kucuk-Erenkoy and Bahcheli. In proximity to Famagusta and Iskele, you can choose the villages of Boaz or Bafra. The city of Guzelyurt and its surroundings is also perfect for these purposes.
For investments, the most attractive will be real estates located in the cities of Kyrenia, Iskele, and Famagusta. Property in these cities and the areas closest to them has good rental potential.
The cities of Nicosia (the capital of Northern Cyprus), Kyrenia, Famagusta, Lefke, Guzelyurt are the best choice for students. The most prestigious international higher education establishments are located there. The only disadvantage is that the capital city Nicosia is far from the coast.