Merlot and jingl- there is no indication at all from the OPs post that the 'homework' has been done, I'm afraid. Those os us who live abroad, and have been involved with expats and forums, especially retired couples- have heard so many who have come a-cropper, in so many ways- and have said, again and again- if only I had realised how hard this was going to be. 1000s - and those who then find themselves unable to sell and lose everything, or sell way below price and just cannot afford to move back- and those who become very ill or widowed- and are totally bereft. DD2 speaks fluent Spanish and lived in the Canaries for years, and came across so many tragic cases of older people totally lost and with one being left alone- without speaking a word- having to cope with social services, governement, taxes, permits, health issues, etc.
I've heard so many heart rendering stories that would make you weep- so, I think it is only fair- as there is NO indication whatsoever from OP that they know the area really well- that they are aware that it is not always easy. I became involved with an older man who had serious health issues and died- and his poor wife, living in a rural area, unable to drive and to speak hardly a word- as her husband spoke French and drove, and dealt with everything. Tragic.
If OP is fully aware of above, then there is no issue, is there.