The assorted Princes of Hell find Poughkeepsie a much more suitable storage area or dumping ground than as a place to do actual work; they are, of course, mostly indifferent to the long term effects of the Bubble on its inhabitants.
The Prince of Lust has no personal interest in the place, and to the best of his awareness there isn't anything notably unusual about how his Word operates there. But it is a useful place to have a deniable meeting.
Poughkeepsie is a favorite place for Renegades trying to shake supernatural trackers. Some elude their pursuers, and some are merely encouraged to think that they have. The Game does try to keep Renegades from going in, but it tries even harder to keep them from coming out undetected... or, for the more problematical ones, from coming out at all. After all, give it long enough and Poughkeepsie will solve the problem for you.
It's a very good place to put the nastier metaphysical weapons, and Poughkeepsie itself could be a very potent weapon if Vapula ever works out how to duplicate the effect and turn it off at will. The weapons dump is good enough for now.
Beleth hates the idea of Poughkeepsie; the Nightmares generated there are pallid and useless. Beleth also hates the idea of Blandine succeeding in anything. Whichever hatred is more important at any given time is for Beleth to know and her Servitors to quake in fear about getting wrong.
The Bubble isn't fire-retardant - and that's pretty much it. Still, it’s pretty funny to send in the occasional idiot cold, as it were. They either learn better real quick, or they die.
Food from Poughkeepsie doesn't taste any different; this actually is of some interest to the Prince of Gluttony. He's one of the few Princes genuinely curious about the nature of the place, to the point where he has permanently assigned a Servitor to do research. She is currently researching whether this was a plum assignment, or a trap.
A Prank that involves Poughkeepsie 's unique nature is almost guaranteed to bring a smirk to Kobal's face - particularly if the demon made it all happen naturally. Plus, it's a good place to leave stuff and 'forget' about it.
Once it was determined that the Bubble did not interfere with Destiny and Fate, Poughkeepsie became no more and no less an irritant to Kronos than any other place on the map.
The Princess of Freedom does not like places where Geases do not bite - and Asmodeus is already giving her grief for the way that Lilim seem immune to the place. She's a willing contributor of resources to Hell's few research programs; indeed, she'd be happy to underwrite the ones done by the Other Side...
The Prince of Factions is of the opinion that any competent Servitor of his Word can promote that Word without supernatural assistance. The fact that doing so in Poughkeepsie does not generate Essence is irrelevant; it's the principle of the thing. Obviously, there are certain safety concerns, but that's a mere hostile-environment issue.
Servitors of the Media are of two minds on Poughkeepsie. One faction points out that the place is an ideal area for determining what humans actually want to watch; the other, much larger faction couldn't care less. Nybbas permits a very little blue-sky research by faction one - hey, you never know - and otherwise ignores the place. I mean. Poughkeepsie.
People still die in Poughkeepsie, so obviously Saminga is still its king. The Prince of Death would like to figure out a way for Undead to survive the place for more than a nanosecond, but that's a side issue.
The Prince of Theft considers stealing something from Poughkeepsie to be good practice for his Servitors. And, given what some of his colleagues use the place for, there's always something there worth stealing.
It's a fascinating place, well worth examining. The trick is surviving long enough to get any worthwhile data; for some reason, virtually every other organization in the War makes it a point to shoot Technology's onsite researchers on, well, sight. This notoriously does not exclude some groups that are theoretically on Vapula's own side.
Hell doesn't much like the idea of letting its human servants go off by themselves without supervision, but it's generally deemed safe enough to have Hellsworn move the heavy stuff in and out. It's rumored that particularly good service done on behalf of exceptionally kind-hearted demons can result in a Soldier of Hell being allowed to die inside the Bubble.
They enter, they die.