Carina's place is one of the best Air BNBs I have stayed in. It was modern, clean, and had all the amenities necessary for my five-night stay.
The room was basically a private studio apartment with a bathroom, mini-fridge, microwave, table, and television. My favorite part was the air-conditioning considering it is very hot and humid in August/September in Barcelona.
Carina and her husband were very friendly and helpful. Carina's husband provided me with great advice regarding transportation, food, and entertainment during check-in. Carina constantly made sure we had everything we needed or that our stay was going well.
While the location is not very central, it is close to transportation (metro or bus) that can get you to any destination you wish to see in Barcelona. If you are okay with walking, the walk to La Sagrada Familia or Park Guell is a nice scenic 20/30 minute walk.
I would highly recommend Carina's place to everyone!