There are lots of guidelines on temperature and what clothing and bedding babies need to have at night. I have a room thermometer which tells me we have cold rooms in winter and a really hot nursery at the moment (god know what sauna it’ll be in high summer of the heat continues). But these guidelines all depend on the baby.
We got N home and then spent the whole rest of the first day and night trying to stop him crying as he wouldn’t settle in either his carrycot downstairs or his Moses basket. The next day when we had a fire blazing in the living room and a sheet and 2 blankets on him with him sleeping peacefully, we realised hadn’t been warm enough so cue a further blanket.
Even in a bedroom of 24 degrees, he has a long sleeve sleepsuit and a 1.5 tog sleep bag. Warm works best for our baby and helps him sleep for longer.