Wine lovers without the space for an extra fridge or dedicated cellar will often struggle to keep their bottles at the right temperature, especially during the coldest times in the year. But experts say every home has a great alternative to a cellar or a wine refrigerator: under your bed. After all, bedrooms deliver much of what wine needs, namely a cool place where temperatures do not fluctuate too much. Storing wine under the bed meets another condition, namely that the bottles should be kept in the dark. The German Wine Institute says under your bed is often the next best thing, but that id…