My teenage son and I stayed at Rosa and Jose's apartment for a long weekend and we would highly recommend it. We had a lovely time. The apartment was clean and well equipped and we really liked the location. It is only a few minutes walk to the Roman bridge that takes you straight to Plaza del Pilar and the old town (including the lively El Tubo tapas bar streets). It's in a square in a traditional residential neighbourhood and just a few steps from a park which has a very friendly cafe-bar and a children's playground. The kitchen is equipped for cooking full meals and there is a supermarket very close by. The beds are very comfortable and the apartment is a perfect size for 2-4 people (I feel that 6 people would feel a bit of a tight squeeze). Jose and Rosa were very helpful despite the language barrier and gave us lots of tips on where to go and what to see.
A comfortable apartment about 25 mins walk from the centre of a very interesting town. Good bus service too.
Communication with our host Antolin was through email and arrival details only reached us on our start day; would have preferred them earlier.