Mercedes was very helpful, like the Catalonian mom you never had. She was very sweet, accommodating our late arrival (flight troubles) and was waiting for us with some delicious homemade Sangria. She gave a lot of great recommendations about how to get around the city by train or walking, delicious restaurants and even walked us through it on a map she highlighted for us. She really loves the city and made sure we felt right at home in her apartment and Barcelona.
The apartment is within walking distance of a lot of attractions of the Gothic Quarter and La Rambla. The terrace is open and gives a great view of Placa Reial and most of the city.