Where is the best place to live in Spain for expats?

Where in Spain offers the most ideal living conditions for expatriates? Could you elaborate on the cities or regions that provide a comfortable and welcoming environment for foreigners, taking into account factors like the climate, cost of living, job opportunities, and the local culture? I'm particularly interested in knowing which places have a strong expatriate community and offer easy integration for newcomers. Additionally, are there any specific areas that are renowned for their safety and security, making them ideal for families with children? Finally, could you suggest some resources or websites that provide detailed information on expatriate life in Spain?