Isabel's place is perfect for a short visit to Sevilla. It's located perfectly, close to the city center, the train station and the bus station to get to the airport.
The apartment is clean and welcoming. The room is cozy, but for one person it is definetly big enough. Only one thing: It opens into the living space and is right next to the kitchen, so you shouldn't be sensitive to noise.
Other than that Isabel is a great host and was very welcoming and open to help. I would recommend her place.