I stayed at Irene's place for about two months this summer, and the apartment was great. It's the perfect location in the city's historic center (walking distance from just about every major sight in Sevilla), and even with the busy plaza outside, the building is very quiet. The apartment also has a full kitchen and a large grocery store close by, which was essential if you're like me and travel on a budget! Irene was quick to respond whenever I contacted her, and resolved any issues promptly. The apartment's wifi is fast, good water pressure/hot water in the shower, and the private exterior space is a nice feature (the mosquitoes in Spain are pretty brutal during the summer though, so I didn't use it much). I would definitely recommend staying at Irene's place for a trip to Sevilla!