What bed type can I expect to find in my hotel room?

If the room type only names the occupancy (e.g. single occupancy), you can expect a bed with a minimum width´of 140 centimeters. Most hotels offer even larger beds (queen, king size etc).

Only if the room type is called "single room" the bed might be smaller, usually the bed is in between 90 to 100 centimeters wide.