This is a great place for visitors who have been to Barcelona before and want to discover new parts of the city, away from the Ramblas and Gothic Quarter. The view from the apartment and surrounding hills over the city is impressive and the area itself, around the corner from Guell Park, is quiet and feels "real". There's a fair bit of hill-climbing and walking involved in staying here, though the local bus route takes you right into town in 20 minutes.
The hosts, Stefanie and Joan, could not be more helpful. They provide guides to the city by email and are always available via Whatsapp to answer questions.
The flat itself is small, but very clean and reasonably well equipped, with coffee maker (Senseo), oven and induction hob. It's quiet, so a good night's sleep on the comfortable bed is guaranteed and the shower in the tiny bathroom is powerful enough to clear away the cobwebs in the morning.