Africa

South Africa

Cape Town: Long Street Backpacker Hostel

Asia

South Korea

Seoul: Kimchee Guesthouse

Australia

Sydney: Jolly Swagman Backpackers Hostel
Sydney: Westend Backpackers Hostel

Europe

Austria

Vienna: Hostel Ruthensteiner (EFH)
Salzburg: Yoho Hostel (EFH)

Belgium

Bruges: Bauhaus Hostel (EFH)

Czech Republic

Prague: Czech Inn Hostel (EFH)
Prague: Hostel Elf
Prague: Hostels Prague Old Town
Prague: Traveller's Hostel

Croatia

Zagreb: Chillout Hostel (EFH)

Denmark

Copenhagen: Copenhagen Downtown Hostel (EFH)

England

London: Clink Hostels
London: St. Christopher's Village Hostel (EFH)

France

Lille: Gastama Hostel (EFH)
Marseille: Vertigo Vieux-Port Hostel (EFH)
Nice: Villa Saint Exupery Beach Hostel (EFH)
Paris: St. Christopher's Hostel (EFH)

Greece

Athens: Athenstyle Hostel (EFH)
Corfu: Pink Palace Hostel (EFH)
Rhodes: Stay Hostel (EFH)

Hungary

Budapest: Maverick City Hostel (EFH)

Ireland

Dublin: Avalon House Hostel (EFH)
Dublin: Isaac's Hostel

Israel

Jerusalem: Abraham's Hostel (EFH)

Italy

Florence: Bling Bling Hostel 
Milan: Ostello Bello (EFH)
Naples: Hostel of the Sun (EFH)
Rimini: Sunflower Hostel (EFH)
Rome: Alessandro Palace Hostel (EFH)
Rome: M&J Hostel
Sorrento: Seven Hostel (EFH)

Netherlands

Amsterdam: Flying Pig Hostel (EFH)
Rotterdam: Hostel Room (EFH)
Utrecht: Strowis Hostel (EFH)

Poland

Krakow: Mama's Hostel
Krakow: Momotown Hostel
Krakow: Mosquito Hostel
Warsaw: Okidoki Hostel (EFH)

Portugal

Lisbon: Oasis Backpackers Hostel (EFH)
Porto: Tattva Design Hostel (EFH)

Serbia

Bosnia: Arkabarka Hostel (EFH)
Bosnia: Bongo Hostel

Scotland

Edinburgh: St. Christopher's Hostel (EFH)

Slovakia

Bratislava: Patio Hostel (EFH)

Spain

Barcelona: Kabul Hostel (EFH)
Bilbao: Ganbara Hostel (EFH)
Granada: Oasis Backpackers Hostel (EFH)
Madrid: Cats Party Hostel (EFH)
Málaga: Oasis Backpackers Hostel (EFH)
Sevilla: Oasis Backpackers Hostel (EFH)
Valencia: Purple Nest Hostel (EFH)

Sweden

Stockholm: City Backpackers Hostel (EFH)

Switzerland

Interlaken: Balmer's Hostel (EFH)

Turkey

Istanbul: Hush Lounge Hostel (EFH)

North America

USA

Flagstaff, Arizona: Grand Canyon International Hostel

South America

Argentina

Buenos Aires: Pangea Hostel
Buenos Aires: B.A Stop

Brazil

Sao Paulo and Rio de Janeiro: LimeTime Hostels 

 Costa Rica

Dominical: Cool Vibes Hostel
Utila: Cascade Verde Hostel