We've been to Italy a few times (family lived there for three years) and were looking forward to some "authentic" Italian but we left a bit disappointed, still hungry and with an empty wallet. We had the Big Italian, the cold cuts and the calamari. Both were good enough to eat (especially after a day touring) but definitely a bit lackluster. I honestly can't remember if we had dessert or not, but we did have the red house wine and my husband had a beer. All of that ended up being a very expensive evening (for Siem Reap); when I paid the bill in cash there was a misunderstanding where the owner thought I said "keep the change" which would have been a $60 USD tip so I sat at the table for an extra half an hour waiting for change and he was surprised when I finally caught his attention and asked for it. It was an honest mistake but sitting around for half an hour, with nothing in front of me, without being asked if everything was okay was annoying. He was, however, busy getting food to the two other tables that were in the place.
The owner was great and very personable, very proud of the food. The restaurant itself was well decorated and cozy but we wouldn't give it another try if we were to go back.
If you own or manage L'Osteria, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.