Check that any sun streaming in doesn't fall on the cot - even with curtains/blinds closed, there's still that annoying sliver!
Oh, and make sure it doesn't stream in on the change table either - change time when Bub is in full sun is yuk!
Maybe blockout curtains??
Try the mobile over the change table rather than the cot as it's more use there - keeps bub entertained during change times. We put a wall-mate in the roof so there's no giant hook sticking out.

Most of the furniture no-no's are baby proofing stuff and you won't need that for awhile!

Hope it's a big room cos it sounds like you have a lot of furniture, lol!