My twin daughters (22) are studying/working in Spain until June 2027, one in Logrono and one in Barcelona. My husband and I are visiting Spain, traveling in/out of Madrid December 14 and returning December 28. As of now, we have no plans and are seeking advice and insight on where to go. We have traveled to Madrid (many times) and Barcelona, Granada, Cordoba and Sevilla as a family. With the exception of my daughter who works in Logrono, we haven't traveled in northern Spain. We will obviously be somewhere in Spain for Christmas and aren't sure where is the best place to spend it -- big city, smaller town, up north, down south. We will definitely be going to Barcelona this upcoming May for my other daughter's graduation so we don't feel like we have to explore Barcelona on this go round though we are not opposed to doing so.
We would like to go to Logrono since we've never been and plan to rent a car from the Madrid airport and drive there. We could stay up north for most of the trip and perhaps end in Madrid for a few nights. Or, we could go to Logrono for a few nights and then possibly fly somewhere down south and then back to Madrid to return home. Any thoughts on cool places we could go? Would it be fun to stay up north, go to San Sebastián, Bilbao? Should we also consider Barcelona? Consider Biarritz in France? We would love to hear any suggestions! Thanks so much.