This page displays any large pine lodges to rent for self-catering holidays for 14 people. Most pine lodges are far smaller, the most common have 2 bedrooms. People do like thse lodges because they are so good for holidays and the larger ones can be quite glamorous with vaulted ceilings and capacious interiors.
Should the really large ones not currently be available, do take a look at alternative high quality pine lodges that sleep 10 or less in the UK.