I write my review in 3 sections - hosts, apartment and location.
Hosts: we were met by Fatima and did not see Carmen since she was out of town. We received a nice introduction to the apartment and surroundings. When we had questions and reached out by email, Carmen was immediately responsive which we greatly appreciated (thanks again Carmen) - this included some basic questions, and when we reported that the knife in the apartment was broken, it was quickly replaced. A+ on hospitality.
Apartment: was very comfortable for our family of 2 adults and 2 kids. The first 2 days in Seville were HOT and the air conditioning in every room was wonderful. Appliances worked well, microwave a plus. There are steps to the apartment, but not a problem for us.
Location: this is the best part of the stay. Absolutely centrally located right on Alfalfa square. We walked every where and to all attractions including visits to Triana where we found some amazing ceramics (tip to visitors - of you want to buy ceramics go to Triana for better quality and lower prices). There are umpteen restaurants, bars, ATM machines, bakeries, several supermarkets (the Sol supermercado was our preferred fav). Right on Alfalfa square do not miss Arins Pizzeria - although it does not look very impressive, it ranks among the best of pizzas we ever tasted.
Overall: Recommend this apartment without hesitation, and it will be our preferred place to stay if we are ever in Seville again.