This is a great place to stay, it is situated perfectly near the edge of the old town, with plenty of restaurants, shops, attractions nearby. Even the park is just across the street and the tram is not that far off either (when you want to go to the beach or El Cabanyal) and it only takes 20 minutes to walk to the train station.
We stayed there 6 nights and found Carlos to be an excellent host: the apartment is furbished and stocked with everything you might need for your stay; short or long. Also, he gave us tips and ideas where to go and what to see and organized a taxi for us because we had a very early flight.
It can be a very busy street, especially on the weekends, so do keep that in mind and you will not be disappointed.