Jose Maria and his family have a wonderful home, it's in a residential but very central area in easy walking distance to the main sights of Seville as well as lots of great restaurants, bodegas and interesting shops. If I come back to Seville I would definitely stay here again! The room was very comfortable and has access to a private bathroom and terrace.
I always wear earplugs at night so wasn't particularly bothered by the noise, but as it is quite an open-plan house the sound does carry. If you're prepared, with earplugs, it shouldn't be a problem though!
Jose Maria really went out of his way to help me with recommendations, buying tickets, finding taxis etc, which with my terrible/non existent Spanish was very kind of him. He also gave a very interesting and detailed architectural tour of Seville on the first night I arrived, which was fascinating and really gave a good introduction to the city, so I could go back particular places and explore in more detail.