Ewa&Pau are great hosts - check-in was super easy, the flat was just renovated before we moved in, so everything was clean and beautiful. The place located in the heart of Barcelona and Ewa&Pau have an amazing guide listing clubs, restaurants and city attraction. It also has a detailed plan for sightseeing, which is great if you're visiting Barcelona for the first town. Last, but not least - check-out was also easy and smooth.
I recommend Ewa&Pau if you're coming to Barcelona no matter how long is your stay.