Here is a map of Blackberry Wood.
The Glamping units are all near each other in the same area; Fire Engine, Snugglebug, Curvy Cabin, The Silver Bullet, Holiday Bus, Helicopter and the Gypsy Caravan. Guinea Pig World is in this area, between the Holiday Bus and the Helicopter.
The Tree Houses are next to each other; just a short walk away from the reception.
The Cosy Cabin and the campsite is in one area; just a short walk away from the reception.