GuestAdvisor is a free Android app developed by thePass Kft that provides a virtual concierge service to help travelers manage their bookings and discover local services. With this app, you can check in online, access your room without a key, view your booking details, keep track of expenses, and order services such as dinner or airport transfer from your mobile device.

One of the most convenient features of GuestAdvisor is the ability to call your host with just one tap. You can also easily navigate back to your accommodation if you get lost and receive recommendations from your host on what to do in the local area. Additionally, the app provides access to discounts and super deals, making your stay even more enjoyable. It's worth noting that some features like login, service booking, or expenses require an internet connection.

Overall, GuestAdvisor is a must-have app for travelers who want to make their stay more comfortable and hassle-free. With its user-friendly interface and useful features, the app is a great addition to any travel experience.