My family and I spent three nights in Wendy's cabin which was very easy to find and located in a quiet area of Bristol. The city centre is not far, and nearby are supermarkets and pubs. Wendy welcomed us with kindness and showed us around all the peculiar elements of the eco-cabin. It is located in the back garden, overviewing a small lake. It is quite private and very peaceful. Bathroom, shower and w.c. are outside, they are totaly eco-friendly (compost loo, no pipes and no running water) since they work with rain water. The whole thing was very interesting on paper but became a bit uncomfortable and inconvenient in reality, especially when you have a four month old baby with you. We had no running water at hand, just jugs and a bowl, and since the tank of rain water was empty Wendy gave us access to her own bathroom for the shower.
Wendy was adorable and checked on us at night after a day's work to see if we needed something.
In conclusion I must make a minor criticism: even if eco-friendly, the cabing and compost loo might have been a bit cleaner. I believe this aspect may be overlooked if one is travelling alone for just one night and has no particular needs.