I have noticed a trend when checking into hotels recently. It has become so obvious having spent in the last 12 months 75 nights in a hotel for work alone, about 100 once holidays are included. That is close to one third of the year.
The receptionist taps away on the computer saying “I am looking for a really nice room for you” or / and “I have given you one of our nicer rooms” every time I have had these lines the room has not been one of the best (as I have stayed at many of the hotels before I know the rooms).
So unless you hear the magic; “I am upgrading you to one of executive club floor rooms” then make sure you reiterate your preferences as they hunt this so-called nice room. Or you will find twin beds, inter-leading doors, noise (as near lifts or service areas or vending) and so on!
Never be afraid to go back down as soon as you go in a room and it does not meet your needs. I did this when a non smoking room had clearly been smoked in. This got me a better room too!