@tom-capper thank you Tom. When I look at the first page of Google with this search query, information sites and comparison sites (such as Booking.com) tend to do well. But what also has happened is that some individual hotels have passed us in the rankings.
I did some minor changes to our on-page content last week, which saw us climbing to 15th position again with this query. Also on other website someone gave me a tip about user experience and he mentioned that for example the H1 title is too far down in the page and that there are multiple blocks on the page, before the actual text content starts...
These are of course things that I need to talk about with our coders and see if we can find a solution.
One other thing mentioned is the website speed, which seems bad, but in Google Search Console's page experience report, we are getting 90% acceptance for mobile and 76% for desktop, so this should not be an issue in Google's eyes...