Kaija love has 2 scenarios, and funnily enough, I liked "less" love points more.
Both are same regarding room (low/high friend route are slightly different), I have no problems with that myself.
Biggest difference is very end of the scene. In very high love route (maxed or close to it I guess), she's just "ok, we're in love, do you still want us together?"
Slightly less, but still satisfying love condition (not sure how many points), leads to one final conversation, where Kaija admits she finally realized what she was missing, and that's MC. She also admits she knows how much she fucked up.
That was scene that made me create full on romance route with her, and I hate the bitch! (sorry!)
Having done full love route, yeah, I prefer less points conversation, because it made Kaija more emotional, more invested, more honest.
As for 2 rooms offer, I can kind of understand it. Yes, MC initially said he wants them to be together, no waiting. But it's been few weeks by that point, they've barely seen each other, and she does admit she'd like to use only one room.
Can hardly fault her for playing it safely considering everything that happened (bonus points if you've burned bridges with family or expressed dislike for Templars in general)