Do you have a support network where you are planning to go? My parents lived at the coast after they retired — mothers home town so lots of relatives and friends around.
However, as has been said, a lot of their neighbours had moved there after retirement having enjoyed holidays there. Sadly, when, as they aged and became ill, their families were too far away to be of much practical help. When one died, the remaining spouse found it very lonely. My father said he arranged a lot of funerals to help the widow/widower because they were too far for families to help. Every time I went to visit, I spent a lot of time helping to organise social help and fill in forms. It was not that either of us minded but, I thought it very sad.
When my husband and I thought about going there in retirement, my father advised against it for the reasons already given. By then, most of the relatives that I knew had died and even if still around, were an older generation than us.
I cannot tell you how grateful I was when my husband developed Parkinsons and friends of many years rallied round with practical and moral support. When he was in hospital for many weeks, they helped with lifts to give my sister, who was driving me to the hospital daily with me, a break. When he died, they were there again, and still are, with visits, phone calls and invitations. I don’t think that would have happened had we moved.
Sorry! This sounds like a tale of woe! It is not meant that way — just a warning to think carefully.
Whatever you decide to do, good luck.