We had a wonderful time here at Josep's place - it is perfectly suited for large families, spacious (and with air con as an unexpected bonus! which helped in 36C ;-)) and with a fully equipped kitchen for those who cannot eat out for BF, lunch and dinner.
The location could not be better, I found the view from the living room on many post cards of barcelona - you are just opposite Gaudi's casa Batllo and in walking distance to Placa Catalunya. Public transport is a dream as the train from the airport stops just outside the flat, no need to change (train is free of charge with the barcelona card btw). Busses and metro leave from just outside the flat so it's easy to get to just about anywhere in town.
There are plenty of lovely restaurants in the area, tapas galore, of course. The bakery opposite proved invaluable for our early morning needs, they even prepared everything for us to take away and we could enjoy it in the flat.
The only "downside" is the many clothes, homeware and other shops around, my credit card was burning (luckily, it was the time of sales, so not too bad after all).
Thoroughly enjoyed our stay here!