I have stayed in this flat for 4 month (Sep-Dec). For me, the flat was perfect. First, ideally located in the center of Barcelona (busses at Via Laietana, metro and trains at Pl. Catalunya, all in a distance of not more than 5 minutes walking). Second, groceries and bakeries around the corner (I used to buy food at El Corte Ingles and Mercado St. Catarina). Third, if one wants to discover Barcelona, the location of the flat is so central that you can easily reach every touristic hot spot within max. 20 minutes by public transport. Fourth, you live in heart of the Gothic Quarter, which is a very nice experience. Next, for those who would do some sports, there are a few gims in a walking distance, and for professionals there is the outdoor workout at playa de Barceloneta - in a distance of 10 mins by bus 47 from Via Laietana.
The host Anna and his husband Tito are super nice and friendly. The communication with Anna was perfect. She responded typically instantly. If I needed anything for the flat (e.g., clothes dryer), it was delivered within 24 hours.
The flat itself is very clean and cosy. It is equipped with all one needs (including a dishwasher, washing machine, and well equipped kitchen) to live there for months. It includes a very nice working space.
Every day I returned to the flat with pleasure and I really felt there like at home. I strongly recommend the flat.