I SERIOUSLY have to disagree with part of what is said about Hostel Estoril in Buenos Aires.
They have 3 floors of the building in this hostel i believe and yes one of them was pretty much full of israelis but i stayed on the lower level and it was AMAZING.So much so i have spend around 3 months here.
Ive had serious issues with Israelis while travelling and i know what they can be like but i would go back to Hostel Estoril tomorrow given a chance.
Federico the owner and his family and the people who work there Roy, Demian, Flavio and Esteban were all like a family to me by the time i left.
You cannot turn around and say a hostel will not stay that way just because you feel it wasnt to your liking.
Did you even explain to anyone working there what your issues were?