Giuseppes flat is in a perfect location in the city centre of Barcelona. It was super easy to get there from the airport with the aerobus shuttle, which stops roughly 500m away from his doorstep.
Giuseppe was a really nice and welcoming host, who was always eager to help us and to recommend places we can visit. Everything we wanted to see was easily reached by walking, even though we'd recommend to rent a bike to get around easily (you can get one for 10€ a day).
All in all we'd be happy to stay at Giuseppes again and surely will do so when we're back in Barcelona.