I don't live in Swansea currently, so it's very important to have builders that I can trust to do maintenance work. John and his son made me wish there was a box beyond 'positive' to tick. They were repairing the plaster on several walls and one ceiling.
They gave me a very detailed (and reasonable!) quote, which, importantly, included the possibility that more work would be required once they took off the artex on the ceiling and were able to see the state of the boards and how much this would cost. They did the work promptly, on exactly the timescale that they outlined in their quote, cleaned everything up afterwards, and communicated their progress during the job. The end result was very neat work.
John serves as a prime example of someone who makes having building work done a stress-free activity.