I've got 4 of us here making a trip to London

1) What's a good central area to stay in? We've identified some motels in
Paddington, Kings Cross, or Victoria. Would someone care to comment on
these locations?

2) We'll be travelling around London for about 4.5 days - what's the
cheapest way to travel. Oyster 7-day pass looks ok. Or, buy indivdual day
passes? Has anyone used the Travel Pass? Any comments?

3) When we get to Stansted, what would be the best way to London. Coach,
Rail, or... ?

TIA