Difference between tại and ở In my book, I was asked to translate this sentence from French to Vietmamese, for which I will also show the English equivalent: À huit heures, rendez-vous avec monsieur Ba à l'hôtel. At 8 o'clock, meeting with Mr. Ba at the hotel. I would have translated it as follow : (Vào) tám giờ, hẹn với ông Ba ở khách sạn. However, the translation from my book came out this way: Tám giờ, hẹn với ông Ba tại khách sạn. Thus, I wonder if ở here is incorrect in my sentence and when to use properly "tại"!? Cám ơn rất nhiều.