Newest hotel perk: Portable Wi-Fi (and it's free!)

Here's an amenity you won't find at many hotels: Wi-Fi to go. All 19 Room Mate hotels in Europe and the Americas -- including three in the USA -- will begin offering complimentary portable Wi-Fi. The "WiMate Total Wi-Fi" program will mean that guests will be able to get Internet access anywhere at their destination without having to pay data or roaming charges. Guests can request a mini router when they make a reservation through the Room Mate website or at the front desk upon arrival. Up to five devices including mobile phones, tablets and laptops can be powered by the router.

Guests will get 100 MB of high-speed Internet. Hotels typically charge for Wi-Fi. Even if they offer it for free, they often have a fee for high-speed Internet. Offering portable Wi-Fi is an unusual amenity. "Posting on social media, referencing mobile maps and sharing travel moments with family and friends has become a huge part of the travel experience," says Room Mate CEO and founder Enrique Sarasola. "We're proud to be the first hotel group to offer free W-iFi in not just our hotels, but throughout entire cities, so our guests can better enjoy their trips."