In the Royal Households there were Royal bedchambers, the King still owned all land in the country and so there was little substantial building, any builds were likely to be fortifications or religious, i really think that apart from the Royal bed Chambers, there may well have been nothing more than communal sleeping quarters for huge number of the peasantry, which were everyone but the Royals and some Knights/ Earls etc, the merchant class was still only just emerging in Europe in towns like Venice and Antwerp, in those cities they achieved a more civilised abode long before the kingdom of England. (at least that is how I understand it from the Historical studies I have undertaken at degree level, i may of course be well wrong.)