I wonder if there are any ways you could help the situation? Could you help throw out some things that are rotten to make room in the fridge? I'm guessing the folks you live with aren't going to change enough for you to want to live there, but maybe you could give them a glimpse of how things could be. Creativity is important in any cohabiting situation. I would try hard at making a cooking situation feasible in your room or cooking bulk meals in the kitchen. - Any sort of shelving or organization system you purchased/make for the room , you could either take with you and receive future benefit from, or you could leave there and they could receive future benefit from.
I believe you'll decide to move out. So here's my advice for finding a room-mate:
When searching for a roommate: I would estimate you need to eliminate at least 10-20 people before finding a minimally acceptable person. Cost, Pets, cleanliness. - Keep in mind everyone claims to be clean, and everyone claims that their pet, kids, etc. cause no trouble. Questions like: How many days is it okay to leave dishes in the sink? and how often does your current house usually need vacuumed could be enlightening.
If you are half-way decent sizing people up, I've found "Being the landlord" can be a lot more beneficial when it comes to room-mates.
- You get to pick the people and set the price. If a one bedroom costs $500 and a 2 bedroom $600 then you can rent a 2 bedroom and charge someone $400-$500 and have fairly reduced rent. - Some people don't want (Or don't qualify) for a lease so will be willing to pay a little more than you might think. ("Furnished" adds value if the room-mate is from out of town.) ***
- Even if you decide to split everything 50/50, there's a huge benefit to choosing the place. You can spend time deciding what is of value to you and what isn't. (Close to work? Nice neighborhood? Amenities?). You can choose the least expensive place that meets your needs.
Note: A 3 bedroom for price in many situations, but carries a much higher risk of having an empty room and/or drama. A two bedroom is a fairly safe bet and logistically easy to fill in most locations.
*** Wild story: We actually had college student from Russia rent a room. (And was Emailing us from Russia!) Needless to say we expected it to be a scam, but the person actually showed and rented a room for about a year. - I can only imagine what other people thought. - We were probably the only people to offer a room. (We did not ask for a deposit or any funds prior to them coming.)
On the other end of the spectrum people often times have a room-mate move out and desperately need someone to take their place. They are often flexible on price, but it might not be a long-term arrangement. Paying up front can be a big value to the person you're renting from, but make sure they aren't about to get evicted.
- Something more sustainable would be finding someone that is getting their place for a good price. Rental properties often go cheaply to relatives. Someone may have a similar respect for simplicity and have already found a place that is a good value. Someone with a mortgage might price a room less than market rates. (Their mortgage payment, doesn't account for all expenses. You are just "Extra income" in a room that would otherwise be empty, etc.)
At the end of the day: "Price" strongly correlates with "value" most of the time. There is some wiggle room with patience, but you tend to "get what you pay for." That saying rings true in your circumstance.