I have a lovely one bed, looking over London's skyline. The development is like a 5* hotel - valet parking, spa/gym/pool, cinema, skyline panoramic Bar.
I've done the house share thing, but once I could afford it I moved into my own place. In London you share because you have to financially, not out of choice.
I think its fine to house share between 18-28, while at university and at the beginning of your career (the transitionary stages) but after this, it's time to grow up.