It had a clean wood & laminate finish although the carpet was scruffy & annoyingly rucked up under the bathroom door. There was a small cupboard for hanging clothes, high up luggage space & an electrical socket beside the small table.
The cabin was 3 metres square with a large chunk taken out by the bathroom ( 2m x 0.7m). The bathroom had toilet, sink & showerwhich worked in 30 second spurts with poor temperature control.
Breakfast was delivered to the cabin at 7am but did not include what I had ordered & was a poor version of a continental breakfast. Still, I had a good nights sleep.
Trains are a one-off, if you compared it to hotel it would only rate one star but if you rated it with an airline it would be better than first class - except for the food - so the best advice is to take your own picnic food & drink.