Apologies for the thread necromancy, but I was asking the same question a week ago and thought my experience might be helpful to other lurkers in the future.
I went to Bar Sara in Kabukicho, where they apparently have many staff with some degree of English. I had a dinner reservation later in the evening so I only stayed for an hour and spoke with two girls. One had limited English but also some Chinese so between the three languages we had a fun time. The second girl had very solid English, she said she'd attended an international school as a kid.
Drinks were stronger than I expected. I understand the core of the business model is that if you stay multiple hours you'll get hammered enough to make poor decisions with respect to the champagne menu.
All in all it was a fun time and I'd recommend it to other tourists like me looking to get a glimpse of what a girls bar even is. It was not remotely sexual, I'd liken it more to sitting down at a bar and striking up a conversation with the stranger next to you, except in exchange for a cover fee the stranger is guaranteed to be easy on the eyes and a good conversationalist.
