It depends on why you want the separate. If you simply want separate entrances, it's cheaper to get a 2 BR lockoff. If you want the option of canceling part but not all, you'll need to either get a 1 BR and separate studio OR a 2 BR plus a second reservation for the preferred smaller component. If you book a separate 1 BR and studio you can later change it to a 2 BR but only subject to 2 BR availability. There is no way to guarantee that they would be connected as separate reservations but you could make the request and I'd give you about a 75-85% chance of having them connected at OKW.