This place is actually in the top center of Sevilla historic old town and you can’t fault it if you are looking for a very central location.
The accommodation is ok for a 1 or 2 night stay as if you think of renting it for longer you may want to ask the host to provide with newer towel and to make sure he lists the bed space as a double bed as it wasn’t a king one. Overall a good stay, for a sightseeing break you won’t be disappointed.