Wonderful apartment, fantastic host, great location. We traveled with our two kids (ages 2 and 4) and my wife's mom. Everything was awesome. More details below.
Host: Xavi was one of the best hosts I've ever had. Very kind/hospitable/knowledgeable/helpful/responsive. We felt very taken care of.
Building/Location: The building overlooks (literally!) the Ciutadella Park. We were on 2nd floor so our living room was a picture window looking out to the streetlife and park. There is a restaurant on the ground floor, but everyone there is chill and there was never any noise (except around 11p when the restaurant rolls down their metal doors-- but no bid deal). The Arc de Triompf and its plaza are just a block away, and a beautiful public plaza. You can easily walk to El Born. Bike lanes are everywhere in the area, we rented bikes from Happy Bike a block away and rode to beach. Subway station at Arc de Triomf. Amazing rooftop terrace with washer/dryer.
We were initially concerned (before arriving in BCN) that this would be too far from the 'action' but-- 1) we're really glad we didn't stay in El Born/Placa Cataluna/Rambla area as that would have been too loud/hectic and 2) this neighborhood is great.
Inside: super clean, comfy beds, full kitchen, clean towels, all the essentials (handsoap, dihes, etc).
Overall a great experience and good value. Thank you Xavi!