Merlynston

No toilets. Hardly any shelter. At peak times there is only a train every 20 minutes and that's IF they turn up at all. Metro has a habit of terminating trains at Coburg if there's any issues on the line between Coburg and Upfield so even if the train can make it to Merlynston it's deemed to be not worth the bother.
If you are thinking of moving to this area try to get near the Craigieburn line which has 4 times the service. (Same price)

Not glamorous but it works - and if your Upfield line train gets cancelled, it's handy to catch the bus to Glenroy station and join the Craigieburn line.