This flat is well appointed and located just across the river from the main tourist area. We love finding places that are just a bit more local than touristy and this was 10 min walk from everything. The Triana neighborhood also has it's own little pedestrian street and lots of bars/restaurants along the water. The little plaza by the Santa Anna church also has 4 delicious little family-owned tapas restaurants that are almost across the street and full of character.
We'd consider staying here again if we come back to Seville and would definitely make use of the beautiful and huge outdoor rooftops if the weather was warmer (it was only 18 C/65 F when we were there in Jan). The wifi is a little spotty on the upper floor since the router is downstairs near the bedrooms but we weren't there too much to have any problems. The entry way/common atrium of the house has a quite off-putting smell when you enter but the flat is not bothered by it once you're inside.
Alberto was also very helpful providing us with recommendations for where to see a great local flamenco performance and tour of the main barrio. He wasn't able to meet us when we checked in but three of his friends met us and they were very helpful meeting us on the street when we arrived with no delay and showing us around the flat. I think one may have been a sister or girlfriend. Alberto was also very kind and helpful the night before we left helping us arrange a taxi to the airport as the street is very quiet in the morning and we had a hard time finding one ourselves.