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I've watched it on Netflix US (thanks Mediahint), it was overall kind of good, some characters were interesting and it wasn't much about "Desperative Wives in jail". The Healy character was well written, Pornstache (Nick Sobotka in The Wire) too. Hell, even Jason Biggs was okay-ish. Some plots were dull (DREAMER / CO love & baby, most of the black people drama) and some twists were forced (Jesus people), but I'll definitely wait for s2.
On the other hand, Jenji Kohan also made Weeds, which I think is "Breaking Bad for children" therefore I'm biased. There is also some inconsistencies, as why women who commited murder / organized crime related felonies are dwelling in a minimum security federal facility, or why some key assignements aren't supervised by the administration (starvation punishment). I'm being picky there, but we already have our share of realistic prison drama (Oz), so when "based on a true story" pops up, heavy frowns are expected.