Ambrogio and his wife are awesome persons. They live in the same building of the house and they are available at any time for requests and help. Despite the house is underground, it's absolutely comfortable, bright, with all the furniture and tools to cook and with a space outside with a table and a sofa where you can spend afternoons and evening with your friend and parents. We had really great time for 18 days. The sea is not so far away ,800 m., so you can reach by a walk. Otherwise you can reach sand shores in 15 min. by car (Barletta or Margherita di Savoia).
Locality around the house is very silent so if you're looking for relax that's the place.
Downtown center is not so far away but you definitely need the car to reach it. Old part of the city and the port are stunning and full of restaurants, bar, pubs etc.
Very close to Bisceglie there are cities worth to be visited. Trani, Molfetta, Giovinazzo, Barletta amomng the others.