Should I get a hotel ?

I honestly haven’t had privacy in a few months. I fell on some hard times and had to move in with my sister. I’m grateful for her help and letting me crash, but I have no privacy. I’m in a room where there’s no door on an air mattress. She also hasn’t unpacked from when she moved in 3 years ago , so I’m around a bunch of boxes in the room I’m in. I’m used of living alone so it’s an adjustment. She also has OCD so things have to be precise and it can become overwhelming sometimes and also gives me anxiety on if I’m doing things up to her standard. There’s a family reunion I’m attending this weekend. I actually didn’t want to attend because we had to pay a ridiculous amount for it. Money I don’t really have. It’s very unorganized and dysfunctional, but that’s how my family operates.

I planned on going back to our hometown, but the air conditioner in my child hood room and other rooms are out in my parents home . My parents were trying to convince me to stay, saying we could make it work, but it sounds like it’ll be a hectic situation. I may have to sleep in the living room along with my sisters 2 kids. It doesn’t sound pleasant at all and I really want my own space. I’m just worried about wasting money on a hotel room.

I should note we’re all going through some issues at the moment, so things may be a bit tense and overwhelming. I feel bad if I decline my parents offer to stay.

I am trying to save money, but I really don’t want to feel cramped up.