Kilian is a very nice and hospitable host.
We spent 4 days and 3 night at his apartment: we were able to check out late to get the plane in the evening.

He was always available, via phone or via Whatsapp :)

The apartment is very comfortable and cozy, we were 2 but it would easily fit 4 to 6 person. 5/7 minutes walk to 2 different metro stop so basically 15 minutes away from every important place in the Barcelona. We were able to go everywhere, have a quick stop at the apartment and be out again to enjoy the town.

Gracìa is a very nice neighborhood, a lots of good restaurants and little streets closed to the car traffic. We felt very safe and the good thing is that you get the "local" feeling, which you don't on the Ramblas.

We plan to go back to Barcelona soon with some friends and we definetely want to stay at Kilian's.