My family of 5 stayed at Angel and Laura's place for 2 nights. It was a very comfortable and nice stay.
The host met us to check us in, and she was extremely warm, inviting and friendly. She also speaks great English. There were also lots of helpful brochures available in the apartment to give us ideas on what to do. The host also recommended to us places to store our luggage between check out and our flight departing Seville.
The place itself is very nice. Beds and bathrooms are comfortable. For four people it is very spacious. The sleeping arrangement for the fifth person is a mattress on a rollable frame that is stored under the bed in the 2nd bedroom, but it is able to be raised up. It would be quite squeezy to have 3 people in the 2nd bedroom, so we moved the mattress and frame out into the living room, and we were fine! It's still a comfortable mattress.
Location-wise, just down the road there are several food places, we had dinner nearby on both evenings and it was such a nice feeling to be able to get back home with a very minimally short walk (barely 2 minutes). The place is a 10 min walk from the cathedral area, so it was convenient too.
Note that you have to climb up about 3 flights of stairs to get to the apartment. It is slightly narrow due to the mobility chair (stair climber) along the staircase. We managed without any problems with big heavy luggage though.
My family really enjoyed our stay here, would definitely recommend.