Posting in general Europe because I'm open to England, Scotland and/or Wales.
Next summer I'm strongly considering doing my family's usual 3 week bicycle intensive trip to the UK. I'll probably stay another 3 weeks or so.
Been a long time since I've been to the UK, and as a younger person was more city focused. In addition to major cities though, have though been to SW England, Yorkshire, a few rural regions of Scotland. But as I said it's been quite a while and memory is failing me. For our sort of travel we prefer charming areas with smaller historic cities, beautiful villages, and countryside with some interest for the eyeballs. Quieter roads, ideally some cycle infrastructure (or at least cycle ubiquity - much easier/safer to tour where people regularly ride) appreciated. Rolling hills are generally doable with the less strong riders on ebikes, but really mountainous is a bit much.
On the continent for instance Alsace is a perfect fit, or Alto Adige, or the Green Heart of Holland.
As usual entire trip won't be cycle touring. It will be cycle intensive, about half the days on bikes.
Which regions should I start looking at? Broad or specific, your input is appreciated :)