Parties: I can't offer much insight as I'm not interested in parties, but I've heard the East campus tends to be quieter. So if you want somewhere quieter maybe pick an east campus college, if you want somewhere with easier accessibility to parties pick a west campus college. Every college hosts social events regularly and there are an abundance of non-college specific events though, so you'll have plenty of social options whichever college you go to.
Sport: While there are college-specific teams, I think there's more focus on the university wide sports clubs. No matter what college you choose you will have access to the York Sport Centre, York Sport Village, and sports clubs, so you're not going to be missing out if you don't go to a particular college. If there is a particular sport you are interested in you ask college reps which colleges have a team for that sport or pick a college close to the relevant facilities.
Location: Depends on what you're looking for in terms of location. For example some people prefer to have their accomodation close to their department to minimise travelling, but others prefer having accomodation on a different campus to their department to separate study and life.
Accomodation: Each college offers a variety of accommodation options. You can find a full list of the accommodation options with their price and college
here. Even the band 1 accommodation has nice bedrooms, so you'll have a good room whichever college/accommodation you choose. Shared bathrooms are cleaned every weekday, so you don't have to worry about the shared bathrooms being grim. I think the main thing to keep in mind is how many people you will be sharing with. If you're a social butterfly you might enjoy sharing a house with 17 other people as there's always going to be someone about to socialise with, but keep in mind the kitchen is *not* going to be kept tidy.