I used to stay at the Hostal Persal on previous visits. It does have elevators so no problem with your luggage. I always found it clean and safe and the multi-lingual staff were helpful. My only criticism is that I feel it´s become a bit expensive for what are basic rooms. If you can get a low season price however it might be a good place to stay.
As for the Ribera del Duero, have you considered staying in Valladolid (which is quite close)? It´s just that I know of an excellent place which I found to be better than many hotels. You can look on www.hostalparis.com When in the area try the tapas to go with the wine... I´m certain you won´t be disappointed.
Have a great trip!!!