Hello everyone, long time lurker but first time poster here. 
I am a mature student studying languages. I have recently returned from my year abroad and am finalising my accommodation for next year. I am living with three other mature language students, one of whom is a very close friend. I know the other two less well, however we do socialise together and get on well. Due to us all being abroad last year, we were unable to view many houses and settled for a property with three big double bedrooms and one average sized single. Although we had all hoped for a double, I said that I would happily take the single if I could pay less rent. Stupidly we did not discuss the rent reduction again before all signing the contract separately when back in the UK. We are now due to move in in a few weeks and have started to discuss rental reduction. The mean cost is £97 a week. The other women have suggested that they pay £1.50 extra a week for the doubles, giving me a rent reduction of £4.50 a week. I am really not happy with this - there is a large discrepancy between the rooms and I would much rather pay the extra one fifty to have a double room. However, they think IABU and that I should be grateful for this reduction. I feel stuck - I don't want to fall out with these women but at the same time feel hurt that they expect me to have a smaller room without much rent reduction. So tell me Mumsnet, IABU?