We have spent 3 days in Sevilla and the appartment is perfect
Appartment is very clean and comfortable for 2 (maybe a little small for more), with 2 lovely terraces
Location is great : It is in a calm street but very close to nice bars and restautants.
El Centro and Cathedral are just 15 minutes walk.
Communication was clear and simple.
The only concern you could have is in case you have big luggage or disabilities because there are small stairs and appartment is on 3rd floor.