We had a great stay at Juan Diego's. The apartment is about 10-15 minutes easy walk from the Old Town and there's lots of local bars nearby. There are a couple of supermarkets between the train station/town and the apartment.
The apartment is very clean and with plenty of space. Our bedroom and bathroom were separate from the rest of the accommodation and we felt it was private and secure.
Juan Diego was really responsive and a super host. Overall, I would highly recommend this apartment and would happily stay again!