Finding good plasterers is very difficult - I have been very lucky. Unfortunately, they were let-down on the job scheduled before mine and asked to come a week early! I could not let them go so final preparations had to be completed very quickly! Plumbers, carpenters & the electrician (me!) were working flat out!
They are skilled craftsman & make the job look easy. It is not. The finished product however is quite superb, adjectives to describe it's quality elude me!
I was caught out by the speed of decisions with the plumbing. The shower trays for example must (or ideally should) be fitted before plastering. The plasterboard will lap over the edge of the tray, followed by plaster or tiles and then mastic. In addition I had to chose the shower units themselves as they must be fitted inside the stud walls. They will be fitted next week!