There are two entrances to the store. The address given was hard to find as it was on a piazza. The address for the other entrance is easier to find, just down the steps and on the other side of the walk from Sapori Bio. I think the address should be Salita Chiattone 3.
Also, there are three other BioCasa locations:
Bellinzona - Piazza Nosetto 6
Agno - Centro Migros
Losone - Mercato Cattori