First write the welcoming letter in your own language.
Express a positive reception. Invite your guest to see the surroundings. keep it short and to the point. Then translate the letter in Creole.
If you have the letter in English, I'll be able to translate it for you.
But you'll have to send it via my e-mail. Thanks.
Here's a link to a few examples of greetings that might go at the beginning of a letter