Staying at Daniela's apartment was one of the best experiences I've had on Airbnb. My boyfriend and I had a few issues with train/flight delays when we arrived and when we left, and she was extremely understanding and accommodating to our needs (even when we arrived much later than expected). She was also very fast to respond to all of our messages.
The apartment itself was exactly as described. Very comfortable, and impressively clean! The location is great -- right in Monopoli's old town, with easy access to the most beautiful parts of the city (and harbor), as well as many fantastic restaurants. If you are visiting Monopoli, then I highly recommend staying at Daniela's :)