This is a vary nice flat and the location is great! Everything is in walking distance. Marta is great with communication and helpful. Fyi, if you don't speak Spanish the TV will be useless since they only have basic channels and they are all in Spanish.
Theres a bank, tiny grocery store, bicycle rental and a cellular phone store (to get a sims card for your phone to use in Spain) all within 1 min walk.
if you are flying into BCN it will cost you about $90-115 euros each way to get here with a Uber or simular. the subway is good if you don't have a big airline checked bag to lug around. the subway has shady people on it so watch your stuff. the closet subway station is Jumel 1. be warned, if you plan on dragging your luggage thru the streets of Barcelona, the wheels on your suit case will probably be broken by the time you get to the flat. the pavement surface is like cobble stone and it's a nice walk thru a busy area so you will be dogging people and mopeds.
Marta was helpful in arranging transportation to and from the airport. If she offers you this, be smart and take it!
Some travelers advice, the best, cheapest and easiest way to get around this city is to rent a moped. EVERYONE has one and the parking is great. We rented a Vespa 300cc ( 300cc is what is needed in order to travel a long distance on the freeways, we drove to Tarragona, Spain) for $100 euros for 2 days. You can rent a 125cc ( great for local stuff) for much cheaper. We also rented bicycles to ride up and down the beaches, that was fun!
I recommend Parrilla Alfonsina Grill for a great ribeye. we went there twice!
This was our first trip to Europe staying in a airbnb. that being said i can not give a proper rating on this flat and can only compare it to the American airbnbs. it holds up well in comparison with American airbnbs but falls extremely short on the amenities. i am sure if i would have reached out to Marta that the amenity issues could have been fixed but for basic amenities, you shouldn't have to do that.
Over all, i do recommend this flat and would stay here again but as a personal rule i never visit the same city twice, the world is just to big to do that!
safe travels and enjoy your stay at Marta's