This place was perfect.
The location was in the centre of everything (close to bars, shopping, a 5 min walk to the cathedral and a 1 minute walk to the supermarket).
The apartment was in perfect condition - a great light and airy place with a balcony overlooking some great sights, a comfy bed and a fully equipped kitchen. It was much nicer than staying in a hotel.
Rafael was a great host too. He helped us get orientated when we first arrived and took time to give us some great recommendations of things to do and places to see, including some 'non touristy' places, which we explored!
I definitely plan to come back to Seville and can't imagine staying anywhere else than at Rafael's place.