I did not get a chance to meet Emilio but my interactions with him were pretty positive. When we arrived in Seville, we got lost and we did not have a phone to call him (that would not have not been much help because of the language barrier :(...). We found a hotel that let us use their wifi and I emailed him and he replied within a couple minutes. Awesome!
We were greeted by Emilio's partner who gave us a tour of the building and the apartment. It's a very clean, nice apartment and I was very happy to get settled in. It in a nice area within 10-15min walk of everything worth seeing. One day, we had an issue with stove not being turned on and he had someone over to help us within minutes. Awesome again!
***i had two major issues.
1) beds: this one, I'm surprised no one mentioned in their reviews. The mattresses felt like I was lying on nothing but sharp springs. There are two beds in the same room and they are equally uncomfortable. If you are a light sleeper, the bed closest to the window is VERY loud. Any slight movement will cause a loud creak. A couple nights, I had to get up and sleep on the couch in the living room.
2) sound: all of the floors in apartment, courtyard and hallway leading out of the building are marble (or something like it). Every noise that's made in the apartment or courtyard is very loud. It's hard to tell if the noise is coming from the apartment, from the courtyard or a neighbor's apartment. If someone walks in the courtyard, the noise sounds like it's coming from this apartment. If a neighbor opens or closes their door, the door sounds like it's in this apartment. If it rains, the water sounds like its hitting the floor inside of the apartment. If your window to the courtyard is open, and a neighbor's window is open or they are in the courtyard talking, you can hear them like they are in this apartment. It's really hard to feel like you have any privacy.
If those problems aren't issues for you, I would recommend staying here because Emilio is a good guy and very helpful.