Its not unhygienic, it can be more of a hindrance than anything. Don't think your unhygeinic because you have body hair body hair is a normal part of life, its only because our society has grown to prefer hairless its what we see at the minute. Rewind to the seventies and the bush was in!
Personally, i wouldn't do stuff with a girl with armpit or leg hair, but its all down to personal preference. And along as you wash its not unhygienic.