Hostelworld
The idea of staying in a messy, loud hostel might seem like a thing of the past - best kept for the backpacking days of your late teens and 20s.
However, a "hostel" is simply "budget-friendly accommodation that focuses on a shared social experience." While to be considered a hostel it must have the option of a dorm room, most offer private rooms as well - and instead of messy and loud, some can actually be pretty luxurious.
Business Insider teamed up with hostel booking site Hostelworld and its HOSCAR ranking of the best hotels in the world to discover where you'll find the most luxurious hostel in every European country for under £40 ($54).
Scroll down to see each one - as well as what it will cost you and what you can expect - in alphabetical order.
The following nation states and cross-border countries are not included in the list: The Åland Islands, Faroe Islands, Gibraltar, Guernsey, Isle of Man, Jersey, Monaco, San Marino, Svalbard, Ukraine, and Vatican City.