We arrived in Barcelona earlier than check in, so we found a great place called Barcelona Locker where you can drop off your luggage for a small fee to travel the city. We had great communication with the hosts, so finding the keys and the place was easy.
The apartment looks like the pictures, and the location is great for visiting Sagrada Família and walking to restaurants. I loved the small balcony to view the city life. The bedroom was in the back so it was quiet. It was a little cold because it was winter (Feb.), but they had portable heaters in every room. They provide travel books and maps with recommendations. They are a quick phone call away if you have any questions.
Overall, we enjoyed our first trip to Barcelona.