Oh indeed it is guest friendly. It is one of my favorites in BKK. AND, there's lots of good things just on 7/1 alone.
They do check the girl's ID and age for you. Super clean, fast internet. The only thing I didn't like is that there was no bar stools for the "bar" that faces the soi. I'd fetch beers from 7/11 and then stand there, admiring the nearby talent then take a walk.