A mystery

Since I've arrived n my hotel room, every now and again this television has turned itself on. There is no way I can see of turning it off and it sits behind a mirror over the bath. You don't even know it is there.
No-one else believed me that there was a television there so this time I took a picture. I then showed it around to convince colleagues I was not going mad. Hadn't really though about it but am in the photo myself and showed it around before looking too careful .Very lucky I took it before a bath rather than after.....
A disastrous culinary judgement on the evening. Ordered squid - which was great - but it came with a huge rocket salad which I ate and enjoyed.
Half way through I remembered that in the past I have found myself allergic to rocket and that inside my mouth swelled up. I'd hoped that Chinese rocket was perhaps different. Sadly not and I spent the night (pretty sleepless again) feeling that my mouth was full of a particularly spiny cactus. Lovely.
When will I learn?!