Not sure which section this should go in, but seems as good as any...
I've got a work contract that is going to need me to be London based for at least three months, probably more. I'll be most of the time either at Canary Wharf or the City.
So, where should I be looking for digs? I had been thinking Clapham, which I've spent some time in, and really like. Or possibly Greenwich. But I'm open to most suggestions - slight preference for south of the river, but feel free to put me straight on that if you like!
I'd like to cycle commute if possible, but might not be able to, so need good transport links anyway.
I like: not too too busy
large park or common nearby (if I'm there longer than three months, then husband will come too, and we have dogs)
gym nearby plus other sports options
easy access to Gatwick is a plus
nothing too "edgy"/not quite gentrified yet as I am coming from rural foreign parts and am easily startled by too much grittiness 
preferably less than 45 minute commute (I know this is holy grail!)
Budget: up to about 850 pcm for a room (first option), then about 1800 for a 2 bed house. Can flex that.
What areas might suit me?