I went to a hen do in Liverpool a few years ago which was really good. We stayed in an apartment block, had a butler in the buff, boozy brunch, cocktail making class and went to a magic Mike type show. It was all booked through a stag & hen website too which made it easier for the organiser as we all just paid straight into the website.
Booking it direct with a specialised company is a good idea - I did that and it meant that the girls could pay their share in installments direct to the company... only had to chase a couple at the end to pay it all off it time.... was def less stressful than collecting money or paying out my own funds up front and running the risk of being out of pocket !