66 metres & 37 hours), based on Amazon.co.uk and Amazon.com reviews. I ignored the one or two 3* reviews, and picked out the adjectives and sought to see what the reviewers most liked. I counted each time they appeared, and then entered them into a word cloud.
The results are as shown, and although I'd read every review more than once, there were some surprises. Scuba-diving was top of the list - a lot of non-divers appreciated this unusual context for a thriller. Characterisation was second though, which was nice to know as a writer, but I hadn't predicted it. Page-turner came a nice third place, closely followed by cinematic and fast-paced. The latter I would have thought first. 'Clever plot', which I put tons of effort into, came around 10th, and 'realism' - because I do a lot of research - barely featured, lol. Exotic settings was nice to see, as it's something I'm continuing into the third novel in the series.
Doing this isn't the be-all-and-end-all, and some things which don't feature much (like good plotting) might be deal-breakers if they're not good enough, but still, it's an interesting exercise, and has given me pause for thought about the book I'm writing now.
There are plenty of Word Cloud tools for free on the web, just google them, dissect your reviews, and enjoy :-)