I've been there many times over the years - though not so much over the last few months. It's a very well run, clean sort of place with a good reputation. When you arrive you're shown to a room, and the girls are sent in one by one to introduce themselves. Finally the maid comes in and asks you which girl you have chosen. 20 sounds about right for the total
number of prossies employed. When I've visited I've sometimes had about 6-10 to choose from - though usually fewer. The going rate (if I remember rightly) is £60 for 30 mins, with no extras.
Some of the girls that work there are absolutely gorgeous - young, fit etc - but the problem I've found is that they usually just provide the absolute minimum in terms of service - no pussy touching, no kissing, covered oral etc. It could be that you would get more by paying more, but I've not usually bothered to ask. It could also be that I've made a mistake by always going for the youngest and hottest. Maybe if I'd chosen more experienced girls I would have got a better service? I suspect that may be the case.
There is one girl that I did have a pretty good time with about 2 years ago - name of Ellie https://www.adultwork.com/1803079
. She still works there. She's 20-something, petite, slender, EE. (Too long ago and too hazy a memory for a full review.) I think the 'management' probably weed out any girl with a really bad attitude - so you're unlikely to have a terrible experience. You may, however, come away disappointed.