“Sally contacted us a few days before our visit to let us know that we'd be staying in the adjacent Meadow View cottage instead, which was an upgrade in terms of space.”
So I don't have experience of the Midfeather Cottage, but I am confident that it and the others in this cluster will all be excellent, judging by the standard of Meadow View and the caring and thorough nature of the owners. The cottage was lovely and clean, well-equipped, comfortable and warm. The location is fantastic, we were able to get the train to nearby Edale station and walk (about fifteen minutes) to the cottage, so no need for a car. From there you're basically at the start of the Pennine way and across the valley are several lovely peaks with plenty of walking routes. The views are superb, we'll be hoping to come back.
Only small thing is to note there is a discrepancy between the arrival/check-in time stated on different emails from Sykes. That didn't affect us in the end, but is worth checking if you're on a tight schedule.