Is Thomas hated in the house?
Not at all. There are mainly the language barrier, but also the Hms who get along well most of the time. Jaja, is loved by all the girls, he's gay, a bit effeminate and a bit funny, so unless the production turn them against him, there is no way he is ever going to be nominated, then Bastien, is a very good manipulator, nobody seems his double/triple game, so for now it seems he's never going to be nominated either.
They see Thomas is not the usual contestant, usually all the contestants as Thomas end up quitting the game, I think they expect that, and also as I said, the housemates aren't very in a war so it's hard to choose someone to nominate and Thomas is the better option (because of the age: 42 yo, the language, and because he's probably gonna quit before the end which I hope not!).
Pierre and Darko were nominated by Mélanie, Maëva and Athénaïs, it seems they will become a strong alliance with Julien and Bastien... mainly because Mélanie and Bastien could become a couple very soon as both are very attracted by each other.
Mélanie is very hated in the house by EVERYONE, even her allies except for Bastien and Julien. Maëva is starting to like Mélanie, and Maëva is "in couple" with Marvin, but Marvin hates Mélanie.
To comeback @ Thomas, he had a conversation with Mélanie this weekend, she only asked him if he is ok in there, he said he is, but then a bit later, he said to some girls that Mélanie said everyone wants him out of the game, which provoked a big fight between the HMs and Mélanie... So I'm very confused since it seems nobody wants him out so bad, but still, four of them nominated him.
Anyway, it's a huge mess lol.