I really recommend this place. Check in was easy and quick. What is more, hostel crew was so kind that from the beginning I felt that choosing this accomodation was a good decision. Hostel was super clean. There's a Wi-Fi zone, where you can for example plan your trip. Hostel has an atmospheric design. In common room and terrace patio you can enjoy your meals/drinks or just meet new people. Breakfast is customised for various diets (I'm a vegetarian and I have hypoglycemia and I was pleasantly surprised that I could eat something from breakfast menu). Location is also an advantage, it's not so far from the main attractions (20 minutes on foot). For sure my next time in Prague I will spend in Hostel Elf again.