A group of us stayed in King's Beck Barn for 3 nights for my hen do, and we were all so thrilled with the beautiful barn and surroundings. The property was generally incredibly peaceful and private. There was so much room for everyone to have their own space but plenty of communal areas for being sociable (living room, snug area, garden, games room in garage). The barn is very well equipped and had pretty much everything you could think of for a self-catering holiday.
Communication with Sarah was brilliant - she contacted me before our stay to confirm various arrangements and let us know how to check-in. The barn also has its own website with loads of information about property, the facilities, and things to do in the barn and the local area.
The only issue we encountered during our stay was that the hot water ran out on two occasions. We had a group of 8 but generally were all only taking quick showers as we had a pretty packed itinerary, so I'm not sure if this was due to over-use or something else. The handbook at the barn said that hot water was set to constant and that if we had any issues to call Sarah. We did call the first time this happened but unfortunately didn't get through. Sarah did very kindly dropped in the following morning and showed us a switch to flip if this happened again, which it unfortunately did later that day. This wasn't a massive deal to us however, and I would certainly return.