Conrad Hotels in Washington D.C.

I just checked in this afternoon and was resting when a waiter came and rang the doorbell and asked to come in to check the water bar. I told her that I just checked in and hadn't touched it yet, but she insisted on not leaving, saying that this was her job responsibility. I said you should check before I checked in, not when I checked in and rested, but she insisted on not leaving, saying that she didn't come in the morning because she was busy at work. I had no choice but to let her in and she wouldn't leave. I had no choice but to let her in to finish her job. The front desk staff was also not polite. The male and female front desk staff didn't even say hello when checking in and checking out.