Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions. Initially, a woman should stay at her home and must not go out to work outside or elsewhere, unless it is essential and then she should seek for (lawfully) permissible job. There is no doubt that a woman's job in these Hotels is surrounded by danger which is so difficult for any woman to escape, even though her activities are far from the forbidden things. Examples of these dangerous things are:
* Men and women are getting mixed.
* Being exposed to seducement.
* Being unable to adhere properly to the lawful Hijab, etc.
Suppose there is a hotel which is safe from the afore said dangerous things, and the wages are from permissible (Halal) sources, then there will be no harm for a woman to work there; but it is very rare to find such a hotel. For this reason, and for the sake of your safety, we advise you to change your career, so as to stay far away from what Allah has forbidden; and Allah Compensates the person who leaves something for His sake with a better thing. For their importance, please refer to Fatawa: 82399 and 83953. Allah knows best.