The data of the "Federation Habitat" confirms, the production crew thought the Voyager has 148 members, plus the Doctor, while they supposed to be 139, plus the Doctor, assuming the audience got noticed on all deaths, and happened no recruitment.
The Doctor states that he had raised the temperature of Sickbay to 45° (Celsius). At that temperature, Captain Janeway - or indeed any human - would have started sweating or possibly panting. Captain Janeway did not display either indication of overheating (till aboard the space station).
In other episodes, phaser fire bounces off a holodeck wall; however, when Paris and Torres enter the cold climate environment, he uses the phaser to crush some ice for blocking the Nyrians' path. That should not be possible.
However, this assumes Federation holotechnology, which is not used to keep people against their will (or at least is not shown that way). Nyrian holotechnology may allow for weapons to "damage" the holoenvironment without affecting the camouflage around entrances.
The Voyager computer incorrectly expresses the time as "eleven hundred thirty two hours" where correct military time usage would be "eleven thirty two hours". The term "hundred" is only used for full hours, as in "eleven hundred". However, while that might be applicable for present day military organisations, Voyager is set centuries from now and a futuristic Federation can use any wording to state the time that it likes.
The Argala habitat is -20 degrees Celsius, so as people exhale their breath should be visible.
The station computer shows that the Federation habitat has the exact same data as the Bourget habitat (including the number of inhabitants), as do the habitats for Tanatuya and Zooabud, respectively.
While confined in the Federation habitat, the crew is able to fashion two crude phasers from parts taken from devices like food dispensers and sonic showers. They talk about how limited they are, yet when they incapacitate several Nyrians, including two that succumb to the cold while chasing Tom and B'Elanna, none of them think to take the Nyrian weapons. They keep using the failing homemade phasers.
The Nyrians react to bright light and feel that the ambient temperature on Voyager is too cold, to the point that Chakotay is able to disable several of them in Engineering by turning up the lights, and yet the Nyrian guards in the habitat seem completely unaffected by the bright light there.
The Federation habitat's climate appears suitable enough for the humans, with mild temperatures. According to the display on the station's terminal though, the temperature in that habitat is 76°C. While the C arguably stands for Celsius, the number is more indicative of a Fahrenheit scale; however, Tuvok later reads the temperature of the Argala habitat as "-20° Celsius." It is fair to assume that the temperatures of all habitats are presented in the same scale; thus, 76°C for the Earth habitat is clearly mislabeled.
The habitat control panel displays the volume in cubic feet, not meters.
With no inhabitants in the arctic habitat (-4°F), there's no reason for the cold-sensitive Nyrians to keep it running.