Does it matter where in the Imperium? A specific domain, sector, or subsector? Off hand I'd say you're looking at a UWP something like:
Class E Starport - They don't want visitors and have no accommodations for them.
Size 1 or 2 - A small moon, possibly orbiting (one of) the gas giants to make wilderness refueling for SuSAG ships (which would have purifiers aboard of course).
Atmosphere 0 or 1 - Because it's a small moon.
Hydrographics 0 - Because it's got no atmo to speak of.
Population 2 - A bigger research station might be too hard to keep secret, a smaller one might not be enough to do good work.
Government 1 - Company seems pretty obvious.
Law Level ? - Unfortunately the highest possible roll would only get a LL6. It should really be much higher for anyone not connected with the facility of course. I'd use the LL as a guideline for how free the employees are and what kind of weapons are common in the security section. Anyone not supposed to be there would face LLF at least .
Tech Level ? - Kind of depends on what's being researched. Again the best roll would be TLA but whatever it is should only represent what would be commonly available to visitors. You know, the ones who will be isolated, locked up, and interrogated

So conditions for "guests" may be very primitive. The facility of course will sport bleeding edge research and top level tech, TLF at least. And the employees will no doubt be very comfortable too and enjoy a similar level of tech.
Basically what I'm saying is you could pick just about any backwater world and "make up" the background of the secret SuSAG base. In fact if it is secret and questionable the UWP could be anything at all on the charts, and something far from the truth to insure nobody thinks it worth visiting. Even X100000-0. A barren world. Add hints of pirates to keep people away...
"I heard The Beowulf was going to jump through there and skim to get over the gap to the other main and they were never seen again. The IN looked into it and found nothing. About 3 years later the IISS picked up a weak Signal GK a parsec away..."
"...This is the Free Trader Beowulf, calling anyone ...
Mayday, Mayday ...
we are under attack ...
main drive is gone ...
turret number one not responding ...
Mayday ...
losing cabin pressure fast ...
calling anyone ...
please help ...
This is Free Trader Beowulf ...
Mayday ..."