The road between Soria and Logrono is great, made even better because the tunnel is closed (or at least it was last Thursday as we headed from Siguenza to Bilbao) so you have to go up and over the twisty Puerto de Piqueras.
We've just spent two weeks in Spain, travelling from Santander to Barcelona (for the MotoGP) then back to Bilbao for the return ferry trip. We stayed mainly in Paradores and the average cost was 200 Euros per night for two of us half board, including drinks with dinner and the odd coffee and snack. The exception being Cardona where we stayed for four nights and upgraded to a suite for 1,000 euros. An extravagance... but an amazing place to stay. Joining their loyalty club - Amigos de Paradores - gives some good discounts and offers.
We stayed at the following Paradores, in this order: Santillana Gil Blas; Lerma; Olite; Vic; Cardona; couple of nights on the coast in Peniscola at a non-Parador hotel; Siguenza. Some truly memorable places to stay, all very high quality, and some really fantastic dinners. The only slight downside is the tendency for whoever built these places back in the 13th century to have steep cobbled car parks. It's almost as if they didn't consider the problems this would cause for bikers!
(Ironically, I dropped my bike in the most modern of the Paradores, Vic-Sau, which has a beautifully smooth tarmac car park. No damage beyond some minor scratches, fortunately.)
Oh, and we saw dolphins from the ferry on the way out!