The phrase "nice gentleman" means a kind and polite man.
Sentences with «nice gentleman»
There was a very nice gentleman however who had a few too many to realize that a fucking tour was not only taking place, but taking place literally right in front of him! (slickstermagazine.com)
I had the opportunity to meet and talk to a lot of quality and seemingly nice gentlemen. (blackchristianpeoplemeet.com)