Cristina's place is in quiet street in a lively district from where you can easily walk or cycle (on city bikes) into the centre of the City. Although the flat is small, it has all the amenities you need, particularly if you take advantage of the many good value bars (including a jazz bar) and restaurants nearby and around Alameda de Hercules.
We loved our stay in Seville, and Cristina made sure check-in was easy, and she responded to our queries very quickly.
We would recommend her place to everyone, but be aware that it is accessible only by stairs.