I have walked into some of the most expensive hotels in the world (couldn't afford to stay there) and looked around and never been approached by staff.
In all hotels (as another poster has said), if you look confident it is rare for staff to give you a second look. Just look like you have every right to be there then you will probably never be challenged. If you need some time to get your bearings go to the bar and get a coffee and after you have been there for a while you will settle down.
My only ever issue was that many years ago I visited Mrs Jones (formerly Sexy Julie) in a Belfast hotel and she was just about to get started when the door knocked and a hotel employee was there to change a faulty bulb in the bathroom. She spoke to him through the door, told him she was in bed with a migraine (I've never been called a migraine before) and she would call reception when she was feeling better. I certainly felt a lot better when I left that room.
So my opinion, go for it. the lady will have all the relevant information for you when she gives you final directions.
Happy punting
Smetner