Got any pics of the studio? Only one's I ever managed to view were a complete joke, but for a single man a good studio flat can be great.
Here's a few tips from me:
Make sure you have the money you need, at £700 you could be paying out around £1500 at the least depending how the letting agency/landlord do their monthly rent, and that's not counting any of the bills, I assume you're going furnished, which should make things a whole lot cheaper.
If you're interested in a place go around at night and spend a little time looking around, you can see if there are any noise issues at that point and also see if there are any unsavoury elements around...
When in the flat make sure you get a good look at everything, don't just glance at the rooms, or room in case of studio
check where plug sockets are, mobile reception, also get the postcode and check what broadband is available.
That's all I can think of atm.