My husband and I stayed at Lidia's for 4 days in April. We had a wonderful time and felt almost like home. The apartment is very spacious and it has everything you need - the pictures are pretty accurate. Is about 10/15 min walk to the city center (Cathedral, Real Alcazar) and 5 minutes walk from Triana's main walking street.
Lidia is a wonderful host. She helped us a lot during our stay including flamenco reservation, keeping a parking spot next to the apartment and answering all our questions during the stay.