I can highly recommend this place. It's situated in the neighborhood of Nervion only 10 minutes walking to the stadium of FC Sevilla. For me it was perfect because I watched a football match there. The city Centre is 40 minutes walking or 10 minutes by metro. I preferred to walk. Supermarkets, a very good bakery and everything else is near the place.
Alejandro (Olga's brother and co-host) took the time and showed me the whole neighborhood. In the evening we went out together and drank a beer with other locals which was really cool. So the hospitality was amazing.
The apartment itself was so clean that I even was a bit afraid to cook in the fancy and well equipped kitchen :D.
I didn't know that I share the apartment with other Airbnb roommates. Both that doesn't bother me because the other people were really nice.
So all in all it was such a pleasant stay. Thanks a lot Olga and Alejandro!