We enjoyed our stay at Apartime's place. The listing is generally accurate and the neighborhood is great.
However, we were expected to check in an hour after the listed check-in time, and check out an hour before the listed check-out time--both of which we had planned our travels around. The host's excuse was that they are very busy with rentals.
We were disappointed to find that not all rooms had air conditioning, and that the kitchen and bathrooms were barely stocked--no hand soap in the bathrooms, not enough toilet paper, no salt or pepper in the kitchen, no paper towels/dish towels, etc.
I expect there are much better Airbnbs / accommodations in Barcelona for the price (if you book early enough) and would recommend a stay here only if it seems to stand out as your best option.