I'm gonna take the Bus Norte bus to Valparaiso from "Puerto Varas Trebol" in January. Is that the main/only bus terminal in Puerto Varas, on San Bernardo/Walker Martinez street? I'm not sure what "trebol" means...
The inter-city bus terminal for Puerto Varas is on Del Salvador, 1093. According to my list it serves these bus companies: Tur Bus, Tas Choapa, Inter Sur, Condor Bus, Buses Jac, and maybe others. It's open 0900 to 1900 M-F and Saturday 0900-1400.
So that bus terminal doesn't serve Bus Norte?
The station at Walker Martinez number 239B has an office where Bus Norte and Cruz del Sur share an office. So if you see the Cruz del Sur sign then you have the right place. Apparently the old station I mentioned earlier isn't used anymore though it was the last time I was in Pto Varas.