Never been, don't know it, but have heard that one must be careful of security there... On the other hand, it's the best natural port this side of the Adriatic. The harbour is shaped like a ...well, dig out your encyclopaedia and look up 'naughty bits' and you'll have the idea!. Go up the funnel, pass the 'coil' in the form of two harbour walls leaving a gap at the centre and then into the northern (starboard) of the two branches before you (Seno di Ponente) Up to the end and burrow in on the port side. Here the Lega Navale Italiana has some moorings for yachts up to 18m passing through. All usual services supplied, including 10T crane. If you want more, I can scan the chartlet in my pilot book.
Buon vento!
There is a marina in the starboard side of the second basin of the harbour. It is quite modern with pontoons, electricity and water. Can't quite remember the cost in 2004 but about Eu35. It is a bit remote from the city and services but there are a couple of restaurants and a bakery and mini market. Toilets etc good and good shelter. Acess to the city is by taxi or a 15min walk to the ferry across the inner basin.
In the inner basin one can tie up alongside the public quay but there are no facilities, consistent wash from ferries but convenience of being near the township and low (no?) costs. On the northern side of the inner basin one can also find a place to tie up alongside at no charge and no facilities but not so convenient to the city even though there is a regular ferry service across the harbour. Another option is to go to the Lega Navale on the nth side which has reasonable facilites, is protected and quiet. About Eu25-30 as I recall. A short walk will find a mini mkt and also the ferry across to the main quay and the city. We took the Lega Navale option on our second visit to Brindisi which suited us well.
Many years ago I read a tourist guide (possibly the Harvard Guide to Italy) that suggested that the liveliest evening entertainment in Brindisi was to sit by the Patras ferry reading the registration numbers of the cars going up the ramp.