To be fair, I am not sure you're supposed to like Fleabag especially with a name like that - there are, however, far worse characters than her and she doesn't really get away with everything.
There is another sitcom that just started on the BBC, Defending the Guilty. I was going to recommend it, although with the warning that the character played by the lady from the IT Crowd is, if the first three episodes are representative, an irredeemable taker - although as the characters are lawyers that was probably inevitable.