My wife and I stayed at Marta's apartment adjacent to the Plaça de les Olles in the Born district for 10 days in Nov of 2022. We had a LOVELY time doing so and would stay there again, in a heartbeat.
ON THE PLUS SIDE: This rental is spacious, comfortable, cozy, and charming; its classic balcony overlooks a terrific square peppered with excellent restaurants and occasional street performers who add to the charm without overstaying their welcome; shops, restaurants, museums, park, zoo, other tourist attractions, Gothic Quarter, and the waterfront district are all within easy walking or Metro-ride distances -- as is the Barceloneta Metro station and Estation Franca (R train line, including one directly to and from the airport); while the Born district is busy, trendy, and vibrant -- the apartment's windows close firmly and lock out any nightlife noise or light that might prevent you from sleeping soundly; 3 beds are perfectly acceptable; there are 1 and 1/2 bathrooms, which proved to be super convenient; the building in which this rental is located is secure and well maintained; entry to the building is handled by a smart-phone app, which worked great; there is a full-sized fridge, microwave, toaster, French press, lots of pots/pans/dishes/glassware; cooking utensils; plenty of clean linens; lots of books/magazines/etc.; a large wall-mounted TV worked fine; water pressure is great and (mostly) plenty of hot water; there is a stacked washer/dryer, which is super convenient, as well. Marta was very helpful and easy to communicate with; we experienced no issues with the financial side of the transaction (all handled through Airbnb as expected), except you will need to download the door-lock app.
THE ONLY ISSUES WE HAD were very small ones... The kitchen sink is quite small, with a faucet that doesn't swivel properly making it difficult to wash dishes. The same door-opening app that opens the main building entry did not work properly with the rental's own door, though Marta quickly and readily gave us a work-around for that issue and will doubtless be solving the problem soon; while the clothes washer worked like a charm, the clothes dryer worked sporadically or, more accurately, required lots of babysitting...so we hung clothes up to dry a fair amount; the furnishings, trim, and interior walls are comfy but a little aged: In that respect, we kept thinking it felt like someone's comfy, slightly quirky, but awesome apartment vs. one of the super-slick, perfect-but-sterile rentals you sometimes get with Airbnb's.
On the whole, a very enjoyable, memorable, heartwarming, charming, and economical stay in an AMAZING part of the city. We genuinely loved it and, again, would rent from Marta again with pleasure!