As a solo female traveller, i stayed in Juan's place for one night and felt completely safe. The place is conveniently located in old town so easy walk to all attraction sites.
The place is as described.
Juan was very friendly and accommodating, as though you are his friend. If you did not do much research on what to do in Seville, you can rely on Juan's recommendations, including which bodega to visit as there are hundreds of them there.
I recommend Juan's place if you are travelling solo or with a friend.