As far as I can see, our two main objectives right now are to 1) get rid of evidence that would make it clear to the police that there were German spies operating here, and 2) get out ASAP to avoid getting caught/spotted by the popo. I think that as long as we can get those done, then Bones and his people will be able to concoct some sort of cover story to explain away what happened here. Getting perfect stealth is long past gone, and trying to get our own cover story up (as some people suggested) doesn't seem like it's our job anyway, as long as we don't make it impossible for the propaganda to deal with it later on.
Now, if I were the person responsible for coming up with the plans (which I am not, luckily) then one possible plan could be something like this:
1) Have the driver (Strider/Bob?) go fetch the truck Tir mentioned Tala had prepared.
2) Have 2 people (Radioman and someone hanging out in the hall?) covertly get the dead Germans into the truck.
3) Have 2 people fetch that guy we captured before and silently and non-suspiciously get him into the truck as well.
4) Have 2/3 people and the current driver get away with the bodies and exfiltrate. The remaining dude will prepare the original car Bob is in right now to make sure the getaway of the people still in the hotel is swift.
5) Have remaining people in the hotel (about 2-3 I think?) destroy the printing press, magazines and other evidence such as the tripwire setup. Then they get out of the hotel into the waiting car and GTFO.
6) Alice and Simon suuubtle remove grenade casings (from the incendiary nades mostly I suspect) or the like that got are scattered about where Tala dropped them, then split up and move away from the target area. Preferably in such a way they can inform the rest of the team if any police is incoming.
This should get rid of the most important evidence while still getting us out in (hopefully) 2-3 turns. Any more than that and we're seriously risking police confrontation (hell, they might be here before then already). We have radio comms to each other and it's not a split second turn, so coordinating this should technically be possible, if we wanted to. This probably misses some things though, I didn't doublecheck any of it, and I'm not gonna set it up in-game.