Ideally you have a DSLR, wide-angle lenses, and a tripod, with the ability to stitch shots together in a panorama in post processing. Short of that, you're going to be challenged.

You need a stable platform and light collecting ability, and can only capture what your lens allows.

Find an object, or move an object (dresser, ironing board) to where you want to take the shot, put the camera on a timer, set for a low ISO, and allow for a long exposure. High ISO will make a grainy photo, and a flash just looks, well, flash-y. If you have a stable platform, the exposure duration won't matter.

If you can contol metering, meter for the average/darker components of the room. Blowing out a window doesn't matter - there's nothing there. You don't want a perfectly exposed window and a dark/black room.

Most important of all - as with any photography - is thinking about what is in the frame and what you are trying to capture. A technically perfect picture of a wall isn't very informative. Compare these to see which gives a better sense of this hotel: