Comfortable but very cold
The trip went smoothly. Instructions to change the e-ticket for a paper boarding pass weren’t clear (they are in small print). Nice bus.
Bus station at Ipoh was easy to navigate. Driver spoke English and informed me of the stops. Butterworth station was right next to the ferry to Georgetown. One star removed because Aman Jaya was a long way from Ipoh, about half an hour by cab. Also bus was very late to depart (but magically arrived at Butterworth at the predicted time).