We stayed two nights in Les Source in July 2010. Anne, the owner is extremely welcoming and creates a very nice feel in the hotel. The location of the hotel is fantastic - right on the banks of the Sorgue and you eat your breakfast on a terrace overhanging the river. There is also a large park/garden which runs along the edge of the Sorgue for about 100m under the plane trees.
The hotel has free private parking which is accessed through gates leading from the main car park (on the left just before you reach the town centre).
The hotel was originally a very grand house and is rather faded around the edges -but still charming. The rooms are variable in quality and size. Ours was nothing special, but we booked very late. I would recommend booking direct - I got a much better deal on the room we had than I would have done via Booking.com. Some rooms have double aspect ceiling to floor windows and original fireplaces, so worth booking in advance for a good room. Everything was very clean. Good bathrooms, if not up to the minute. Nice toiletries.
Breakfast was continental style - quite homely. Not massive selection, but good quality. Best croissants we had been served on our 18 day trip (quality of hotel croissants has definitely gone down in France!). Dinner no longer available - the owners run the hotel as a B&B now.
To sum up, a charming little hotel with very friendly owners in an unbeatable spot.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC