Adverts with a loose connection

I was browsing Reddit today, and was confronted with an ad for a hotel in Tenerife, which would normally be innocuous however it's the hotel my mum and dad are currently staying in! I haven't searched for the hotel, place etc. Nor do I follow Hard Rock hotels.

My best guess is that my mum had posted their location on Facebook, and then they're advertising to their friends. Although this is a really loose connection. Anyone else have any ideas?

In light of this however, I created a subreddit for people to post about any loose connection ads they experience. So if you want to join the discussion, you're more than welcome!