Factual error: When Iris is unable to sleep she looks over at Amanda's bedside clock which displays 5:00 pm, however, moments later Iris discovers a button to lower the shade. There is bright sunlight coming into the room, however, in December the sun sets prior to this time (about 4:45pm according to timeanddate.com)
Factual error: The outside view of Kate Winslet's 'cottage' is not a cottage at all - in England it would be considered a large detached house and it has several rooms on the upper floor. However, the inside depicts an actual cottage: there is only one bedroom (Jude Law has to sleep on the sofa), the bathroom is too small for a regular sized bath, and the downstairs only has a couple of rooms. So the outside view of the house is large, whilst the interior is depicted as tiny.