Our stay in Seville was perfect - the biggest advantage is that the appartment is located right in the heart of the old town - we could reach all the major tourist attractions on foot, had plenty of bars and restaurants around to choose from and yet the appartment itself was located in a rather quiet street, so you'd get plenty of rest at night. Grocery store is 3 steps away from the appartment - you can see it through the balcony. The appartment has pretty much everything you'd need on a 5 day journey, everything works, also plenty of daylight coming through the two balconies.
Overall, decent place for a decent price, but a few repairs and decorations would go a long way :)