"Impressed with the two engineers"

A little note to say how impressed we all were with the two engineers that attended this morning. They were efficient, polite, charming, very good at their work and simply fitted in here without any hassle to us or our customers, we’d welcome a visit from them again anytime. They even found two units on an obscure flat roof which were not easy to get to, but they were determined and they did it! They had not been cleaned for some time, so we are very pleased.