Is it appropriate to tell girls in the hotel room?

Your idea is ok, and there must be no small gifts, not necessarily roses. Choose what she likes, or what you think is more suitable. The most important thing is to have the witness of your friend and some of her friends. You should be bold, not timid and not dry, and be generous even if you are rejected (of course this is not expected). I don't know if you have seen the program "One in a Hundred". Eloquence and tone of voice are very important. Use your willpower, sincerity and heartfelt words to influence her. Wish you success! ! !