I havd 2 DC, (DD 5, and DS 2) They share a room, we have a 2 bed property - no other choice,
although they have always loved it and 9/10 its fab....
recently however at bedtime
DS will be sleepy - I normally put him to bed first, but only by a few mins - just settle him and then get DD ready 10 mins max. This has always been fine
anyhoo - I put him to bed, get DD in - and then she'll start pissing about ( she has always been fantastic at going to bed) I know the recent heat hasn't helped and have staid calm etc then, but last couple of nights particularly have been a bloody nightmare
she'll start pissing about, and of course 2 year old see's it and thinks playtime... and then gets hyper - I have not long got them both to sleep tonight - DS was in bed by 6.45 and DD at 7
in the end DS bashed his head running around and felt sorry for himself and staid in bed, and I had a rant at DD after internally losing it 
Can anyone help with some strategies to restore the calm at bedtime?!