One coach of Baku train is for families and groups of 4.
Comfort class cabins are two rooms with a private WC/shower in between. Each room has 2 seats/berths, 4 in total. There’s reading lamp and electric plug for each passenger. There’s a small table where two passengers can sit face to face. Room has wifi access.
There are only 4 cabins like this, which are expected to be sold out very quickly.
The train fare between Baku and Ankara is expected to be around 600 TL/170 Manat/85 Euro per passenger for comfort class.