We spent a week in Petra at the beginning in June and the only thing wrong was that it wasn't long enough!
No McDonald's or KFC, and nowhere advertising 'Roast Beef Sunday Dinner' or 'Bangers and Mash' - absolute heaven.
It seemed very uncommercialised with quite a few Greek holidaymakers there, too.
Most of the tavernas seemed to be family affairs serving traditional Greek food and playing Greek music.
We stayed at the Panorama Hotel - although it's a bit of a walk into Petra itself (15 or 20 minutes from our high-up room), we felt it was worth it for the fantastic views over Petra and the sea (check out my hotel review).
I would say the only downside was the beach and sea.
The sand is very dark and this clouded the sea as the waves churned it up on the shore.
We'd definitely choose to go back and I agree with Reefuser that it would be a shame if it got spoiled.
Polly