I am glad I had already booked at Rockside Cabanas before reading the most recent review. Had I not, I would've booked somewhere else, and that would have been a mistake.
There were no complaints with the service. We found the staff to be friendly, attentive and hardworking. The morning we went off on a day trip, they opened the kitchen two hours early to give us breakfast.
The room was great. Unlike the previous reviewer, we had no complaints with cleanliness. In fact, I was very pleasantly surprised by the cleanliness of the bathroom in our rooms. I had a chance to see some of the rooms at a highly regarded resort down the beach, and Rockside's were much better. We both enjoyed the quiet and privacy of the cabanas. Matara Road through Unawatuna is very busy, but we couldn't hear the road from our cabin. People we met on the beach spoke enviously of how quiet our cabanas were. We spent several afternoons on the porch reading, playing cards and sipping tea or beer, feeling like the only people in the world. It was great.
Our greatest issue was with the expense. At 30 Euros/ night, it was more expensive than many places, but we decided that we were paying for the quiet and privacy, and were happy with the decision. Lunch and dinner were a little more expensive than elsewhere on the beach, but not significantly; breakfast was roughly comparable. Other than that there were no "hidden" expenses we found.
Other than that, we had few complaints. We are very happy we stayed there.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC