We enjoyed very much our family short holiday at Samflat.
We are a family of six, the appartment was perfect for us, confortable and spacious. The 2 bathrooms were fine.
Location is absolutely great, everything to visit in Barcelona is within walking distance. And the metro station is right next door when you are a little tired.
And the apartment is 5 minutes walking from the Aerobus stop for commuting from/to the airport.
Kitchen is ok, but don’t expect to do some expert cooking. On the other hand, Barcelona is full of great places to eat, at a very reasonable price, so you will probably prefer eating outdoors most of the time.