I'm unsure of who the occupants are... The semi-detached house adjoining us is split into two flats, one on the bottom and on on the flat. This is in a village.
The top floor I know has a middle-aged couple, one of whom works in IT I think or at least with computers. I'm not sure of the person who lives below. I've been there several times in the evening and it is very quiet and looks just like a normal place.
There is nothing which causes me any concern, e.g. the general area outside is well kept, it is very leafy and neat/private area.
I will go back a few more times though. We've already asked surveyor about noise insulation and waiting for reply.