Highly recommended.
This guest apartment is attached to Manuela's flat, but has a locking door and an en-suite bathroom, so you do not need to worry about privacy. It is very close to the tram line T1 (which runs right in front of the San Bernardo train station). The location is perfect, right by the cathedral in the heart of Sevilla. Manuela helped us with information about the airport shuttle, and was very friendly- she even left breakfast for us in the kitchen. We would happily stay with Manuela again the next time we are in Sevilla.
*If you will have heavy bags or have difficulty walking up stairs, this might not be the place for you because there are lots of stairs leading to the third floor. For us, it was not a problem.