I work in different positions based on my mood and the layout of the room. I estimate the relative frequencies are:

50% - Stretched out across bed
25% - Seated in an armchair or sofa with laptop atop lap
15% - Seated at desk
10% - Working at table in lounge

About the only place I work with the TV on is in the lounge, where it's basically unavoidable. I think the last time I turned on a TV in a hotel room was slightly over 3 years ago... and I've spent approximately 250 nights in hotels since then.