I think you're off to a pretty good start.

[A river, a train, and plenty of people. So, advanced enough to have a train at least, which is one thing it shares in common with Midgar.

And, because this feels like a conversation she could get into, Tifa grabs a second glass and pours herself a glass of water. She settles right back in on the other side of the counter, as if she had never moved at all, and her eyes go round – thoughtful – while she considers.]

Hmm. Does it have a lot of buildings? Places to go shopping, or things to see?