Dear Mr/Ms:
Firstly.thank you for choosing (酒店名)as your preferred accommodation.
if you need any assistance,please let me know,as I am pleasure to arrange all the necessaries for you
we are looking forward to you visit.
因为我不知道你主要是发哪种问候信,但是简单的话这样也是可以的,我也是做酒店的,我们一般会给arrival的客人这样发,不知道你们是怎样的,仅供参考喔!