A good clean place, right on Roncesvalles. We used 2 bedrooms, one completely separate, the other off the living room. The kitchen is large and fully equipped, the living room/dining room also large and bright.
Can't think of any negative points. Obviously you can hear the traffic on the main street, but that's to be expected. It wasn't a problem for me and I slept well.
If you park on Roncesvalles, keep an eye on the time - I paid $30 for a ticket because I forgot the clock starts at 0800 hrs.
I thought Sebastian's apartment is good value.