My girlfriend and I had an excellent stay at Thiago and Miguel's apartment. While we did not get to meet them personally since they were away at the time, they were very reachable by message and they arranged for a neighbor to let us in and show us the place. They also arranged some things for us during our time in Sevilla on short notice, which was extremely kind and helpful.
The apartment itself is in a great location, in the Sevilla center but also quiet and residential. It is a short and pleasant walk to any of the main sites of the city and we never needed to take any public transportation during our stay. The apartment is newly renovated and the bedroom and bathroom are clean - there is also excellent air conditioning in the bedroom which was great since Sevilla was extremely hot during the time we visited.
Overall Thiago and Miguel were superb hosts and I highly recommend them to future travelers in Sevilla!