A word on the Hotel Del Oso, if I may. I stress that this is a personal opinion and it will depend on how you like to wind down after a day in the saddle. HDO is a lovely hotel - I have had the pleasure of staying there twice; once for a recce in June, then once on tour with my buddies last September - but the village it is in (Cosgaya) is dead in every way it's possible to be, even in summer.
It does have a pool which will likely be open.....
The staff are lovely.
but....
It's 14kms from Potes where you will have to ride to before you begin your day anyway.
The bar is soulless and very small but you will be able to sit outside and watch the babbling brook quaffing ale.
Whilst the food is top notch, it's top notch everywhere within a radius of 100 miles, but you will only be able to eat at the restaurant; there's no other choice.
Top Tip: Be fuelled up every night because the nearest petrol is 16kms the wrong way (towards the coast) from HDO incl of 14k to Potes
On reflection, I think I would rather have stayed in Potes itself which had riverside bars and restaurants and there was more "life" going on. It wasn't bustling, just busy enough. One night in HDO is all you really need but, as I say, it all depends on whether you just like to relax in complete peace and quiet and eat and drink in the same place every night for 7 days.
TBC.....