If you are planning to visit Barcelona then I wouldn't hesitate to recommend Alex's apartment. The apartment is spacious, relaxing and near to the city centre but away from the noisy and bustling touristic areas of Barcelona. With 1 queen sized bed, 4 single beds and baby cots, two toilets (bathroom/shower rooms), a large living room and spacious kitchen you'll have plenty of space as a family or with friends. The apartment has plenty of amenities including a washing machine, tumble dryer, air conditioning, plenty of kitchen equipment, hair dryer and a television with many channels catering to multiple languages.
The apartment gives you an idea of what it is like to live in a residential neighbourhood in Barcelona with access to at least 4 supermarkets (highly recommend Ametller Origen for high quality food stuff) within a 5 minute walk, plenty of restaurants, a 10 minute walk to the marina/seaside, about a 10 minute walk to the metro line 4 that takes you directly to the Placa de Catalunya (and La Rambla) and plenty of bus connections to the city centre and back. The tourist bus route (red route) runs conveniently right near the apartment meaning that you can spend the day on a hop on/hop off bus around Barcelona.
Being on a main road, you will inevitably have traffic noise but this is true of any where. This can be remedied by closing the double glazed windows and doors and turning on the air conditioning during summer.
Alex was very communicative throughout the process. He arranged a taxi for us from the airport and back. His wife and son met us and showed us around the apartment and answered every question that we could think of.
If you are looking for a spacious, comfortable and residential experience with a friendly and responsive host then look no further. You won't regret choosing Alex's (and his family) apartment.