I didn't see a ghost but think I experienced one.
Staying in an attic suite in a hotel in the Highlands for a few nights. I was 16. I kept getting woken by the smell of cigarettes and an "old man" smell (someone whose hair was dirty and whose body needed a good wash). My Mum was sharing a room with me but her bed was well over the other side away from me and I mentioned it to her but she said she couldn't smell anything.
Earlyish one morning (6am), I'd woken up and the TV was on quietly. My Mum always used to put the TV on when she was getting ready for work so I guessed she was in the shower. It was the Sydney Olympics, so I turned over onto my side and watched it.
I felt my Mum sit down heavily on my bed (behind me, I was turned over near the edge of the bed with my back to the ensuite) and wriggling like she was putting her tights on. This was something she used to do when I was little and at this point I felt a bit irked because she could have woke me up and it felt a bit selfish.
The wriggling stopped and I felt her peel back the sheets and get into bed alongside me. Felt her full weight on the mattress.
Again when I was little, she'd sometimes do this and cuddle me and gently wake me up.
Very predictably, she did the next thing she'd do me as a child which was to rub my arm. Usually she'd say "bayyybeee, baybee, it's time for my baby to get UP now!"
and I was feeling quite irritated that she was treating me like a kid again (and would have liked a lie in!) so I brushed her arm off.
To make matters worse the cigarette smell and dirty man smell was over powering and I was getting really pissed off by the shitty smelly hotel and my mum climbing into bed with me (hormonal teenager).
Mum started stroking my arm again and this time wrapped me up and squeezed me tight across my body and I could feel her hot breath on my neck so in a rage I threw the covers back and said, "FFS sake, I'm awake OK??? I'm not bloody asleep will you leave me alone???"
To which my Mum, from her bed on the opposite side of the room piped up, "Well of course you're not asleep, you've put that bloody Olympics on at this hour and woke me up too! Did you HAVE to put the TV on? It's 6am!!!"
I SHOT out of that bed. My Mum was so confused.
I could see another imprint in the bed too.
She tried to convince me I'd been half asleep and dreamed it but I could tell her who had won the medals (rowing and running) and how it had been close.
Told the staff in the hotel. Said, "I know it's a weird question but do you have a frisky old man ghost here by any chance", I laughed. They didn't. They also refused to comment or anything. Felt very sinister.