The Alameda de Hercules is an amazing place. Dozens and dozens of cafes, bars and restaurants all within 200 metres. You can spend many happy hours out there eating tapas and watching Seville go by. Not too touristy - lots of locals around.
The apartment is very new and very clean. It has a good kitchen and lots of light, plus excellent blinds that keep the place cool and dark when you need that.
We caught the public bus to go sightseeing at the Alcazar, Cathedral, etc and it was nearby, easy and most times very quick. (But a bit slower on Sunday!) You could walk the distance​too if you wanted.
Host Juan is very accommodating and thoughtful and quick with his translation app to make communication a success if, like us, you speak limited Spanish!