Senaru Traditional Village is a small Sasak settlement of old-style houses near the Rinjani park offices. It is not a museum in the grand sense, but it gives a useful look at village architecture, family compounds, and the slower mountain rhythm behind the trekking economy.
Go with a local explanation if you can. The value is in understanding how the houses work, how rice and livestock fit into daily life, and how the north-Lombok culture around Bayan differs from the beach towns farther west and south.