We've had excellent outfitted bike touring holidays with Explore Worldwide, Headwater and Cycle Skeddaddle.

We chose France with each of them, but they all cater for other countries.

I'd heartily recommend each of them, and wish you a happy hour's googling their options!

(Headwater tends to be nice and easy. Explore and Cycle Skedaddle go from 'indolent' to 'insane'!)

They all carry your luggage and select well-chosen food and lodging. Enjoy!