The apartment is extremely well-located in the touristic center of Sevilla, and it's possible to do everything walking.
It was also very clean and complete.
The hosts are friendly and polite. We arrived very late from the airport (after 11pm) and we were waited for the check in. They also left a map with useful recommendations.
The only minor issue is as the apartment is located in the ground floor, there is almost no natural light inside it.