This is a large and clean flat that is good for 3-4 guests.
It was convenient to the metro but a little far from the old town of BCN for walking - that was fine for us since we were happy to be in a quieter, less touristy part of the city.
We were a party of three women who had travelled from UK/Australia. The main bedroom has a toilet ensuite and the main bathroom is the only one with a shower (something to note if you really want two full bathrooms).
The place was very clean and spacious and the service for check-in was pretty smooth given the office is right next to the building - our flight was quite delayed but they were pretty good at meeting us to let us in (though you should note there is a pretty hefty fee if you arrive post 8pm).
One last thing to note is that it is on the ground floor which is convenient but you don't have windows that can open in the lounge/dining room or in the second bedroom. It is frosted glass so you don't even get a view and don't really have an idea of what kind of day it is outside until you leave the building. You also can't get any natural air into those rooms since the windows don't open.