I want to make a level, but can't find a good set for it. The subject explains what I need, so I'm asking if there are any good sets with it.

Townhouse isn't quite there, but it gets close. I'm sure some people have made 1.23 versions of it.

Well, there's Modern City, though it doesn't really have insides of buildings. The closest is probably Mega Megatropolis.

I've looked at those 3 and they aren't really what I'm looking for in realism, not photorealistic but at least something comparable to modern structures.

Think you're out of luck, then. Mega Megatropolis is probably the only set to go inside of modern buildings in any detail, since Lark's Office set has been stalled since 2004, and the most realistic you'll get on the outside is probably Townhouse from TSF, but that doesn't actually have streets and there are no insides to speak of.

You could split the office and the road into different levels. LMAT: Aftermath has a pretty good office look, but it's pretty ruined. You'll have to compromise with that.

You can also try using hotel tilesets, but they might not have everything you need.

Big Landscape can make a decent-looking office building, although it doesn't have the roads.

I appreciate the input; I think I will prefer to use Cool Day

I Think Use hotel dream tileset