The house is a great place for your stay in Seville. The description is accurate and the house is excellent. Especially the terrace is wonderful, where you can enjoy the sun all day with a great view over the next door church. The house is lies in the center of the city and almost everything can be visited by foot from here.
When you have bikes (like us) being in the middle of the city center is a little less convenient, but it can be overcome.
One more thing to notice, is that you have to cross the downstairs bedroom to get to the door. So if you have separate planning for your stay, this is something to be aware of.