Hi Sylvia, 
I like many on here started using JY after losing a partner, its good to travel with other people I believe. 
Some of the holidays I've done would really suit you i think but there are many more. 
From my experience not in any particular order :- 
1. Cilento Coast 
2. Croatia Isterian 
3. Treasures of Andalucia. 
If you consider a touring in future I've done 4 American ones and they have been excellent, think the Golden West is my favorite but not a lot in it. 
Doing Americas Heart & Soul (Chicago to New Orleans) in November really looking forward to that as I like the live Music scene especially the Blues Clubs. 
Mick