We had the chance of renting Javier's listing for 3 nights in May. The floor we occupied in the house is huge, very clean, well decorated and well situated. As it is an old traditional house made of stone, it lets the sounds of the outside life come in: perfect for getting the pulse of the Sevillan life.
The first night was unusually hot and we did not have the control for the air conditioning at the other end of the floor; when we texted Javier about this the next day, he immediately remedied the situation and even called an AC installer to have a unit installed for the next guests.
We were able to use the washing machine, which was a blessing after two weeks on the road.
There was a large patio on the roof, however, we did not take advantage of it, our days being too busy visiting Seville.
Javier is a gracious host who gets things going for you and he is full of recommendations for the local life. I would recommend Javier's place in a heartbeat!