Everest Hotel in Hanoi

I arrived at the hotel at 1am to find my room had been given to someone else. My workplace had arranged and had agreed to pay after the stay, they called at 4pm on the day of my arrival and confirmed this was okay. However, when I arrived I was told there was no room for me. Through Google translation the receptionist said I could stay somewhere nearby and they would pay for taxi. The place they brought me was a one hour hotel with guests coming and going all night, banging doors and arguing in the corridor. Everest was actually an okay room in comparison but I just found service terrible. When I checked out the receptionist who was asleep at desk (8am) just grunted at me as I handed the key seeming upset I woke her.