Great apartment, big, bright, clean, well furnished and equipped. As on the description!
Communication with Diego was instantaneous and the check in very smooth.
I highly recommend Diego's place to enjoy Sevilla.
Just be mindful that, as you can clearly see on the map, the apartment is not in the historical city centre. Some nice bars and restaurants are 5-10min away, but the majority of the sightseeing and food scene are more like 20-25min away on foot (which wasn't an issue for me).