The host will stay at the apartment to welcome your visit. He will introduce the rooms and each equipment step by step, you need to learn how to use the water heater and washing machine. He can answer you any question and help to familiar with Barcelona, really nice guy. It has a very good location, the metro station and bus stop in front of the apartment. There are several supermarkets, 24h markets, restaurants, cafe shops nearby. I'd visit here again.