fat old man and a "hook"

[serafim]

All that i remember is:

there're an old fat man (i think he is Richard Griffiths, but i'm not sure) and a beautfull blond girl, they're in a boat, so the fat man thoughts she is a hoooker (escort), but she was an spy (not sure about that too), but everithing she does or say, could be interpreted like hooker talk...

its a bad description, but i trust in you guys =P

[Trevor]

This sounds like Blame It On The Bellboy which I think came out in 1992 and was filmed in Venice. Things get very confused in this film where several hotel guests all have similar names like Orton and Horton and the bellboy messes everything up. 

[serafim]

BINGO!

Thanks a lot dude.