There is good news and there is bad news. Bad news first: the sound quality in this film is awful - we had the volume up to the max and still could not hear some dialogue! The other bad news is that there is no subtitles option - no hard of hearing subtitles. They would have been handy!
Happily, that is the only bad news. The good news is that the rest of this film is brilliant. The script is clever, witty and well-written - and efficient, with no flab - the acting and direction are great; the locations look wonderful! I used to live in Prague for a while, so recognised the awful and doomy Hotel Dum too (where lots of English teachers get dumped by their employers!)
Some of the gags are old-fashioned in that visual humour slapstick was the continentals love - one particular joke was the same as I've seen in a 1930 Laurel and Hardy film (about one man breaking in through a window while the other enters the house through the open door and watches him).
But anyway, this film made me laugh out loud several times. It is genuinely funny - far more so than most Hollywood comedies. I could watch it all again now. If you like black humour, then you'll love this. The comedy is winter dark and the ironies abound. Funny funny funny! 5 stars!