Murano is the biggest of all the halls so logically it easier to make friends because there is simply more people. However as a result it is noisier and known for loud parties, it's also not in as nice an area of Glasgow as the other accommodations. Queen Margaret is more expensive and quieter than the other halls and is located in one of the most expensive parts of Glasgow. It is the 'prettiest' of all the halls and definitely very safe. Other than that there isn't much difference between the Glasgow owned accommodations, a lot of the blocks at each residence have been refurbed but there's no guarantee you'll be placed in one of these, so it is a gamble. If I were you I'd go for QM or maybe Kelvinhaugh.