This is a great place to stay, situated very near the train station and within easy walking distance of all the sights. The area of Russafa is full of quirky bars and restaurants so you don't need to go more than 5 minutes from the apartment to find great food in the evening. The apartment is spacious, really comfortable and very well equipped with lots of extras like tea, coffee, water, milk, olive oil, seasonings and cleaning products including washing tablets - makes life very easy. As others have mentioned, as did Fernando, the entrance needs some renovation, but this doesn't deter from the quality of the apartment.
Will definitely stay again if we return to Valencia.