Carmen's apartment was perfectly located, we fell in love with Seville. While you are in a fairly busy area in the day, it's located on a street where few cars use and so it's nice and quiet. The terrace was AMAZING! We loved it up there.
Carmen's friend greeted us as we had a late check-in time, she was very kind, however did not speak any English. It all worked out but it would have been nice to expect that as the entire time I was chatting to Carmen in perfect English.
Would definitely recommend staying here and taking advantage of the terrace on hot days :D