Excellent location. Simply ideal to walk to everything you need to see in Barcelona.
It should be noted that being that this apartment is dead in the center of the city, it can get loud on the street during weekend nights. It's absolutely tolerable, but not suitable for those seeking silence.
Very comfortable space with pretty much anything needed to stay and suffice to make dinners and such. The bed is super nice and so is the sofa bed in the living room.
Edu is the most helpful of hosts providing any form of help together with great recommendations for restaurants and places to see.
I absolutely recommend this apartment.