I had a wonderful stay here. It was a great spot for me -- a 20 minute walk from Ciudad de Artes y Ciencias and 30 minutes to the beach. Rosa was very accommodating on my arrival and departure time. I spent the morning exploring downtown and texted them when I was on my way to their apartment. I had an evening train on my last day, and they let me leave my belongings there while I enjoyed the beach.
The house was comfortable and incredibly clean, the shower was nice and hot, and they were kind enough to feed me some breakfast the next day -- I felt right at home! Rosa even gave me a ride to the train station on my last day. Can't recommend enough if you're trying to split time between the beach and the city.