Walter is a great host! We had a late flight and he waited for us till 1am and let us check out later so we could enjoy Barcelona for few more hours without bags. He also gave us good directions on how to get to the apartment from the airport.
The apartment looks exactly as on photos. We had very small but nice balcony, the bathroom was very clean, big and nice, the kitchen was small but had everything you need for cooking. So we could cook and use the fridge (but there is no dining area so you can eat only in your room or on the balcony). We were also allowed to use the washing machine so we felt like home. We also did't see Walter much, which we appreciate, because we like privacy. But he was always there for us if we had any questions.
The apartment is on the 3rd floor just above the subway station. It is very comfortable for transportation (you walk like 2 seconds to enter the subway), but at the same time it is very noisy even if the windows are closed. We had sleeping problems because of it for the first nights but then it became a little quieter or we just got used to it. Anyway Barcelona is a noisy city.
The area itself is nothing special, but there are just 10-15 minutes of walking to Citadel Park (highly recommended) and about 20 minutes to Born area with great bars. There are few supermarkets in walking distance, 24 hours shop nearby and a cafe on the ground floor. 10 minutes on subway to the city center.
The rooms is small but was ok for 2 of us and the price was very good so we could spend more on having fun) We enjoyed our stay!