AO size Vinyl posters - for branding student houses

I'm looking for someone to design a poster that will help me to let my luxury student properties. The Poster needs to eye catching and to fit with the corporate image - but needs to be fresh.
It needs to be visible from a distance as the posters will be put on houses at first floor level and need to be seen from the pavement/street level. With our contact details easy to read
our website is www.mystarfish.net