So when I was playing the recent build, I couldn't help but notice that his actions were not that of a guest and was kind of overstepping the boundaries (at least from my perspective), even if he had to go through the entire Hinterlands stuff and his family/inheritance stuff he did go overbord and wanted to get some opinions on it :

DISCLAIMER: This is not me hating Pedro, as a reader i like how he was portraited and the P's relation to the Hotel, the entire Panoptes lore was interesting but this is just how i would have seen his actions if I was the Master 

1-The way he entered the hotel: He sneaked into the hotel, then to the Obsidian layer that had a god made shrine of Hermes (who almost killed him), took something and even if it was rightfully his it stil doesn't change the fact that unless the Mc and Asterion do a full inventory check they can't make sure if he took or put smth else in the room. I mean the hotel has a FRONT DEST FOR A REASON and it's not like the Owners would have rejected him taking the feather in the first place, and as a Panoptes entering a room dedicated to Hermes is a really dangerous thing to do.

2-His constant attacks on Nikos: Here I'm talking about the first time since in the second fight they had none of them was in control. I know that he had a grudge agains the "Snake man" who pushed Clement over the edge, but I think that the Mc should have a conversation with Pedro not to tell him the entire Argoi thing but just to let him know that the Argoi in the memories and Nikos are two different people and Pedro has no right to damn Nikos for his grandfather's sins since if we were to do the same to him it wouldn't look good either (the tapir incident his grandfather had). And i think that a good time to have this conversation was right after the 2nd fight when the Mc told Asterion to calm Oscar down, and before he talks with kota, this could have been a great time for the Mc and Pedro to have a talk.

3-His "What are you?" question to Asterion: This was him straight up overstepping his bounderies. Yes he has the right to be curious, and we have guests who were curious about the Hotel and Asterion like Robert who chose to stay in the Hotel to find out more about it and minotaurs but Pedro was just rude, he had some info from his grandpa's memories but not enough to get the full picture but even then it was not even who are you it was  WHAT, from the way i see it he has neither the right nor the authority to ask Asterion in that manner.

Yeah, I generally agree with all of your points.  There's certainly context to explain why he acts how he does--he's in a fraught state in general (recall that in the middle of all these events, he calls his father, who refuses to believe it and instead verbally abuses and basically disowns him).  Also, he doesn't really know what the MC is like or how the hotel is currently run--all he knows is that the last Master kicked everyone out violently.  So it's understandable that he acts alone to find the feather--he's hopeful about the hotel, but he doesn't have reason to trust the current hotel management, so better to rely on himself.  Then he sees what he believes is the same snake that prompted Clement's breakdown just casually wandering the hallways, and by the time he confronts Asterion, he's just Done With It All.  

Now, to be clear, I said that the context helps *explain* his behavior--it doesn't excuse it.  He's still responsible for his own actions (except perhaps when there's a smell of rotting flowers in the air...).  His actions are *understandable*, but that doesn't mean they're appropriate or justified.  

And that's fine--good, in fact, in a work of fiction.  A character can be capable of good (see: interactions with Oscar), but also be far from perfect.  And that makes them more interesting.  

(Re: point 1, I very much doubt Pedro knew that it was a shrine to Hermes--he just knew it was a creepy cavelike room in the sub-basement.)