The amazing thing about this museum is that everything here was found nearby in the village just under the big colored rock (see my photos). We drove past it in the bus... it's a stunning rock formation with strong color and shape. The ancients must have thought so too.
The museum houses some very precious pre inka stone carvings. If this interests you it's definitely worth a visit. If you are travelling from Puno to Cuzco, take the Tourismo bus and it will stop at the museum for about 40 minutes. There are bathroom facilities at the museum, and you can purchase snacks and water in a shop nearby.