At one point the Ecuadorian embassy put restrictions on him.
AFAIK the restriction was “stop using embassy property to interfere in other people’s elections” and “you need a wash”, “clean up after your cat”, and “we don’t like that you skateboarding at night, playing loud music and walking around in [your] underwear“.
I’ve not seen any corroboration for the claim he smeared excrement on the walls, but that was in the same article.
From what I've heard on the matters and comparing the way Assange looks and talks before and after his time in the embassy, it appears he developed psychological issues.
On that point I totally agree, despite not buying into his story/justification at all.