A Hoth stronghold would be great if the interior was warm. Or at least had warm areas. I am not talking about ice on ceiling and snow on floor with a furnace in one area melting things. I am talking about sealed warm environments (preferably with large windows looking out on the frozen tundra). The rest of the stronghold, like the docking areas and secret caves and whatnnot can be frozen cold places.
The Rishi Apt is just the basic layout of the cantinas on most planets. Looks like they just used the old code for that and decorated it bit differently. Re-using old assets, rather than made it from scratch.