Rent this flat if it's available.
The apartment was exactly as described. It's very comfortable, has everything you will need, is perfectly clean, and is in an incredible location for exploring Sevilla by foot or otherwise. It is perfect for two people (sharing a bed).
Whether you're dining out or eating in, you'll be happy with your options. A broad range of cafés and restaurants are easily walkable, from street food to Michelin recommendations. There are multiple groceries within 5-minutes of walking, and the hosts provide shopping bags. The kitchen is fully equipped with all necessary items (e.g., pans, utensils, plates, etc.) and it's stocked with basic cooking ingredients (e.g., oil, vinegar, salt, spices, etc.).
The hosts are ideal. They provided all needed information before my arrival, met me on the street, and were incredibly responsive. They even checked in mid-stay to see if I needed anything. I will stay here the next time I'm in Sevilla.