Pilar is amazing. Nice, flexible, helps you with recommendation. The appartment has everything you can think of. Every corner has a story. The bathrooms and kitchen are very well equiped with lots of appliances. Right near the building you have lots of specific restaurant and souvenir shops.
The only problem in that area is the lack of natural light in the house and the smell of dampness. But to stay in Pilar's appartment if you want to stay right in the middle of the center of Seville is an experience that you can't miss.