The location of the apartment is fantastic, thirty seconds from the Basilica De Santa Maria Del Mar. It was absolutely sparkling clean when we arrived. Martin welcomed us very nicely and also allowed us to leave our luggage for the day after we checked out (we had a late flight that evening).
Although the apartment is in a busy area the soundproofing on the windows is really excellent. I would recommend some earplugs though, if you are a light sleeper like me, especially at weekends (although that would be the case in any property in the area, not just this one).
We walked everywhere from here and didn't actually hop on a bus or metro for the whole trip (four days).
We washed our clothes each day in the washing machine and there is a small, private, outdoor area in which to hang them.
It's very easy from here (and very nice) to walk around the gothic quarter and the beach is only a fifteen-minute stroll away.
I would definitely recommend this property to any travelers who want to stay in the centre of town.