The night train departs from Timisoara at 6.25PM and arrives in Costinesti around 9AM.
It has second class couchette cars (with 6 beds in each compartment; price is €32/bed) and first class sleepers (2 beds per compartment; price is about €50/bed).
The train also has regular cars (with seats not beds); a seat costs €27 in second class and €35 in first class.
The information about prices etc. is available on the Romanian railways website ( http://www.cfr.ro/calatori/ ), although it is indeed somewhat hard to find them and the version in English is not very clear. Anyway, search for this route then click the icon under "Price", choose the appropriate options in the "Ticket" and "Class" fields, click the arrow on the lower right side of the window, then select your option in the "Reservation" field, click "Next" and you'll get the price
You can book tickets on https:/…loginuser.aspx
Edited: 10:35 am, August 11, 2011