Hi Trevor,
Thank you for our 5-star review!
The wagons are self-contained with a bath and loo.
The outside shower was added years later as an extra optional feature if a guest felt like a change or wanted to experience an outside waterfall shower. Yes, it is communal for all to share, which is explained on arrival. Thank you for your feedback on this; I have now gone and edited the wording on the description to state communal shower so guests can be aware in advance. As for the space, the concept is modelled as a tiny home glamping experience. We find it creates a couple's closeness and intimacy that really appeals to our guests. With the very occasional, I think 4 in the last 6 years, claustrophobic feelings inside, we are disappointed for you that you felt that way; it is important to have your personal space respected! Fortunately, the experience and lots of outside space made up for that a wee bit. We hope to see you again in the future, maybe in one of the larger house units this time. Regards, Shane!