My apartment at Puerta Catedral India Lofts was very, very spacious. My window opened up to the Archivo General de Indias next door, and it is a minute from the Reales Alcázares de Sevilla and two from the Catedral de Sevilla. That is to say, the location is fantastic and is within walking distance of many bars and restaurants.
The apartment itself is big, private, stylish, modern, and is stocked with many amenities. The check-in was flawless (there is even an app you can download to unlock the doors), and the staff was very welcoming and accommodating.
I will definitely stay here again when I return to Sevilla.