Hey, I lived in a house of 7 girls at uni, and I told them after a few weeks. They were all very non judgmental people and as far as I know they didn't tell anyone else. (Apart for one who told their boyfriend who then told his friends, but i didn't really know those people so I didn't care what they thought of me). It didn't change my life at all, but I know not everyone is so understanding, and I was lucky that they all were. I never made out that I was ashamed or it was wrong, I answered any questions they asked, and was confident about it. However, I never took incalls at our student accommodation. You share the house, yes you pay for your room, so it's up to you what you do in it, but they might see that as a bit disrespectful (not saying it is, just that people who don't live in this world might not want people in there house paying for sex or being branded as a 'brothel' if word gets out).