Stop looking at other AirBnB's in Sevilla. Just book this one ASAP. This was - by far - the best one my girlfriend and I have stayed at.
Everything is close by and within walking distance to all the major sites in Sevilla. There is a small convenient store within 30 seconds of walking out and there are multiple places to enjoy tapas, sangria, and beer.
Our host, Belen, was amazing, thoughtful, and very helpful. She has arranged the AirBnB in a way in which you feel at home, secure, and most important: relaxing.
We HIGHLY HIGHLY recommend you stay here - because we definitely will again when we come back to Sevilla.