Travelled with that from Tartu to Riga. All I can say is that it was the worst trip of my life. :(

What exactly happened?
My negative experience with them is just that Ecolines on route is hoover :) taking passengers on every smallest stop, so journeys are long

Well, Trendliner is nice but not for international routes. Seats were hard as rock and uncomfortable, space between seats was also as small as it could be. Also it was very sensible to all the holes in the road, which made it even worse. I don't understand why they send Trendliner to Tartu and then Cityliners for routes inside Latvia. I also wrote to their Facebook, will see what they answer. On the road we also made a stop to let a boy out for peeing.