We had a super stay in Ann and Steve's apartment. It was exactly as listed , well better than that actually.
Steve helped us with all the necessary arrangements and everything went like clockwork.
Local DLR takes you to Bank or Tower Hill - all for £1.50. A 24 hour Bus stops at the bottom of the hill - a 53 - this will take you , or bring you back , to within 100 yards of the Big Wheel - again for £1.50 so you will never be stranded.
A tip for travellers - ensure you have an Oyster Card - travel with is less than half price.