Dear Mister Alvin,

Thank you very much for this quick reply (that is not always the case with other Embassies...).
I have only 1 question about 'the invitation letter". Can you tell me who has to write such a letter (hotel, tour organisator...)? All other requirements will be ok.
Last year, she came to visit me for 3 weeks in Belgium. I had to write such an invitation letter and everything went smootlhy. But how shall we do it now?

Kind regards,

Eric