Ingrid's Place on Rambla Catalunya is fantastic! It is all about location, location, location.
A block to metro on Paseo de Gracia and from there anywhere. Great food all around, world class shopping at your door, groceries half a block and top sights all within a short walk or train ride (Even the kids thought everything was really close). Plenty of taxis at the corner and great night activity all at your doorstep.
Nothing like waking up to the aroma of baked pastries and coffee while looking at Casa Batllo from your bed. Grab your flip flops and go downstairs to have the best chocolate croissants and Bonyols in Barça.
The apartment is precisely as the photos show it, squeaky clean and comfortable. The architecture is great, from the outside it is just a circumspect building door but once you are inside it is like your very own contemporary oasis :). We were 2 adults and 3 kids and it was plenty of space for all to unwind after a day of sightseeing and partying.