I need to write a letter to selected hotels for corporate rate for my company

Hi, vinagal!

I moved your question out of Introductions to this forum topic area so that it would be more likely to be noticed by those who are best able to answer it. Introductions is only for people to introduce themselves and we try to not ask questions there.

Concerning your question - If you would like to post a draft of such a letter here, without putting any contact information in it, I'm sure that there will be those of us who'll be willing to come along and make suggestions to you as to how you might make improvements to it.

Thanks!