do you know anything about Evason Resort and 6 senses spa?

Yes. Very nice hotel but really out in the sticks. But that's not a problem if you can live with the in house transport into town. Two fantastic pools especially the infinity pool. Great grounds though a bit hilly and not for those with mobility problems. Excellent food.
Check our site though for our favourites in this part of the world.
www.leightravelclub.com

I am fit and 50, do not think the hills will be a problem. How long will the ride into town be and can I go alone in the evenings? Thank you ...

Website says 20 minutes from Phuket town and 25 minutes from Patong. I don't see any reason why you could not go alone. http://www.sixsenses.com/evason-phuket/

Thank you so much. Looks like the perfect place to end a life changing, fabulous, first time traveler to Thailand !!!