Seville is a great city and should definitely be visited. The apartment made our stay even better due to it's great location in the Triana district which is a short walk from the old town. There were six of us and a baby and the apartment was spacious enough for us all. A cot was provided which was great and additional towels for the baby. There's a lift so getting the pram and luggage to the 1st floor was no issue. The cafe right outside was very convenient as well as a small supermarket just around the corner. Also the Triana market was close which has lots of great produce (we loved the cheese) and there are plenty of bars/ restaurants close by.
Mariano was a great host, responding quickly to any questions and he even collected us from the airport with appropriate child seats. We would to visit again.