Being a frequent traveller knowing several of the top-classed hotels I have a relative view on things and expectations, especially when you start noticing that hotels are not really needed - especially in BCN.
At Helena's place you are in a super-centric region of Barrio Gotico, 5 Mins walk from the Ramblas, 5 Mins from the Port, 5-10 Mins to Catalunya and just in the heart of the small and pretty boutiques around to buy stuff.
Actually I was a bit surprised that we had also good and granted access to the kitchen to cook some things (for which we sadly had no time to do so), cook some coffee, prepare some evening snacks etc. Everything was clean, and also could we deposit some few things in the fridge.
The bathroom was clean, had an open window, for taking a shower in the mornings and get prepared. You have to be patient for some seconds to get warm water from the pipe, but that is more a convenient factor. The shower was clean as well as the toilet. Nothing to be missed here.
The actually sleeping room had a commode for stowing away clothes, the two beds, sheets on the bed, that were absolutely useful for the temperature (sleeping with open window was perfectly fine). Normally i am a bit reluctant to get used to foreign beds, but i could sleep quite well in here. Also the pillow was comfortable. Nothing badly missed. The area itself and the flat is quite, you can really relax in there.
Helena herself is a very kind and helpful person even looking for answers that could not be typical, like dancing events. Highly impressing were the reaction times. You will really get answers in short time from her and even then in a absolutely helpful way. So here you feel highly welcomed and helped.
My experience tells me, as I am a very frequent visitor of BCN and not the typical camera&backpack tourist, but more culturally interested and discretly walking around, this is all you need to get into the flair of the city. As it was also my first own experience with Airbnb, it was a good start. From the request to Helena for the stays, over the reservation up to the actual stay and checkout, there was nothing were i could criticize. All you need for a enjoyable stay and feeling somewhat "home" for the days you are there..
My personal recommendation for a stay in BCN..