Wow this apartment is beautiful and will really enhance the whole romantic magical experience of Italy - totally recommend it, particularly for couples. I was only able to stay 1 night as I was due to leave the next day, but I would really have liked to stay longer. The apartment is well thought out and beautifully designed. Vittorio was a great host, super flexible, and helpful with checkout/questions etc.
Castellana Grotte is a beautiful town, it has everything you need. Very close to Polignano a mare, Monopoli, Bari, Alberobello. I took buses to all of these places. And the buses were on time! Lovely fruit and veg market on a Saturday in the car park about 5 mins walk away. Make sure you speak to the locals - they are amazing! I made lots of friends. Castellana Grotte will always have a special place in my heart : )