I've been here a few times.
I do agree that this place is authentic , however they need a major upgrade.
Wires are hanging from the ceiling and the fan looks like it's going to fly off!
Also on hot days they need to install an A/C system. It's way too hot in there.
Out of the vocals I have heard I really enjoy Justin Bacchus (http://justinbacchus.com/)
He's there quite often and I think he has a killer voice.
When I was there on Sat afternoon I was not soo keen on the band. It was a female singer and the band was not only off tune but also overpowering, so you wouldn't hear the vocals.
There is a cover charge at night - I believe it's $10.
I will be back eventually - staff are always friendly. I didn't know this place was also a hotel! :S I don't think I would rent a room here.