We stayed at Javier's apartment in Seville for just a couple of nights but it was perfect. The location is great. Just 20mins walk from the main train station and minutes to all the shops, bars and amazing sights. Seville is a beautiful city.
Yes, the apartment is small as it's a studio apartment with sofa bed but for a couple of nights when you're out all the time sightseeing it works great. Javier was there to greet us on our arrival with a glass of bubbly and then was a great help in suggesting all the places to see and pointing things out on the map. I would recommend staying here and is a great price.