The flat was spacious and really clean, the beds are also confortable, we slept very well. The communication was perfect, our host answered quickly and was really efficient with good advise.
The decoration is a bit austere, and the flat is kind of dark, but all what you need is inside. Also, one of the room doesn't have a door and is directly on the living room, I think it's important to notice it.
The place is not in the pretty small streets you can usually find in Sevilla, it is a little bit far from all the touristic sites if you decide to walk, otherwise you have the bus around.