I have just come back from the Holy Land and at we visited Bethlehem the site of the nativity there is a star on the floor where it is said Jesus was born, the guide told us an Inn consisted of a room divided into two sections people one end and animals the other and this would have been such a place there are still some old buildings in Bethlehem but a lot of modern buildings, the old part really is only manger square and one main street, Its nice you are making a crib as so much tinsel and glitter and true meaning dismissed, the wise men are not usually in a crib until Jan 6th Epiphany, and cribs are usually left up until 13th jan. the roofs would have been flat and were made of light material we saw a house in the holy land where they lowered down the man to be healed and guide said because roof was able to be removed, it was interesting. all the best, I was so pleased to see bethlehem dec 25th is my birthday !