Very comfortable, clean, spacious, well-lit place, with 1 queen bed in a separate bedroom, in addition to the 2 single beds in 2nd bedroom (and sofa-bed in the living room) ! Comfortable new mattresses. Kitchen has fridge, 2-ring stove, sink, all dishes/silverware/pots/pans, but no oven and no spices/oils/etc. Nice bathroom with shower.
Excellent location, walking distance to Verdeguer metro station with 2 metro lines for easy connections, walking distance to several supermarkets. The rental is managed by a property management company (not a lived-in apt), the representative/employee greeted us well and on time, but didn't have much local knowledge (told us to google info :-)
On a separate note, if you want to visit La Sagrada Familia, etc, buy online tickets more than a month in advance.