Hostel Carpe DiemvsTaban Bar & Hostel
Both properties are rated very highly by travel writers. Overall, Taban Bar & Hostel is the choice of most writers compared to Hostel Carpe Diem. Taban Bar & Hostel comes in at #19 in Zagreb with accolades from 3 reviews like Frommer's, Time Out and Lonely Planet.
Hostel Carpe Diem
 Rough Guide
Milana Sufflaya 3, Zagreb 10000, Croatia
From $0/night
 "A suburban house in a quiet area of town – initially a bit difficult to find, but the city centre is a short walk downhill once you get settled in." 
Taban Bar & Hostel
 Time Out
 Frommer's
 Lonely Planet
Tkalciceva 82, Zagreb 10000, Croatia 
From $13/night
- Pet Friendly
 - Bar/Lounge
 - Free Internet
 - Free Breakfast
 - Laundry Service
 - Multilingual
 
 "The latest offshoot from Buzz Backpackers is Taban, a sprightly new hostel opened in early 2012 and firmly aimed at those who want comfort and cleanliness." Full review
 "This welcoming hostel has a total of 50 beds divided between single, double, and family rooms, and six-bed dorms." Full review
 i 
It has excellent soundproofing, so you can’t hear the music when you’re upstairs
 "Great location for partying, right on Tkalčićeva." Full review