Worst was a caravan at Mawgan Porth in Cornwall, in 1968. We arrived at lunchtime, after an overnight train journey from Heywood, Gtr. Manchester, with 3 young kiddies, only to be told that we couldn`t access the caravan till after 2pm. When we finally got in there, it seemed OK, until it was time for bed. We turned the settees into beds, and although we`d brought our own sheets, they provided blankets, those thick, grey itchy ones, which turned out to be slightly damp and infested with maggots!
Best was bed and breakfast at what was then the post office in Redmire in the Yorkshire Dales. We called in on the off chance, and were provided with a gorgeous room, and a beautifully comfy bed. Breakfast wasn`t too great, but we still stayed for 4 days, and loved it.