def beds(c)
    beds = []
    if c.double_bedrooms > 0
      beds << pluralize(c.double_bedrooms, 'double')
    end
    if c.twin_bedrooms > 0
      beds << pluralize(c.twin_bedrooms, 'twin')
    end
    if c.single_bedrooms > 0
      beds << pluralize(c.single_bedrooms, 'single')
    end
    beds.each_with_index do |b,i| 
      if i < beds.size-2
        beds[i] = "#{b}, " 
      elsif i == beds.size-1
        beds[i] = " and #{b}."
      end 
    end 
     beds
  end