My wife and I stayed here on a couple of different nights around a trip we planned out to Koh Rong Samloem. Zana House is a great little spot because it's away from the craziness of Serendipity, it's cheap, and the beds are quite comfortable. The showers have hot water, although the heads are a little different than we're used to. It's only about a 5-10 minute walk to Serendipity beach, but I'd suggest taking a tuk tuk to Otres beach as it's much more relaxing. Overall, we liked our stay here and would definitely recommend it.