We've been criticized on Amazon.
And we've decided to come to our own rescue.
The charge? Well, two reviewers of our Istanbul and Dublin books argue that they're too feelgood.
One says the Istanbul title is a 'hagiography ... there isn't enough warts and all'. Another thinks our Dublin book is 'too upbeat ... I can't believe that poverty is always amusing.'
Of course everyone is entitled to their opinions, especially if expectations are raised and then not met.
Our defence? We must say that in our attempts to offer 360 degree portraits of our cities we attempt to capture the heart of each metropolis through the eyes of its writers.
We all know that city life can be hard, especially for poorer people (as much as it is rich and full of delight and stimulation for others).
As our readers are discerning grown-up travellers it's our job to present them with both the gutter and the stars - and all that lies between.
We're bound to sound a bit put out, they are our babies after all and the gestation and birth isn't always easy, believe us!
But we do feel that a number of the writers we select would never make it into many of the glossy city tourist guides.
Ralph Rothmann viscerally describes a freezing Berlin winter so that you feel the driving sleet and the smell of brown coal.
Michelle Lovric engages in the practicalities of dealing with an overflowing toilet in Venice's famous Aqua Alta.
Abdelkader Djemai writes movingly about the poor Moroccan pensioners who spend their day sitting on Paris's Gare du Nord.
Iqhal Ahmed tells us about what it's like to be alone in London when everyone else is having a good time.
Ivan Chechot evokes the brutalism of Kupchino, a large residential area of St Petersburg, a world away from the Hermitage.
These are just a few (and, incidentally, Istanbul includes a Kurdish Communist writer and Dublin the mordancies of Keith Ridgeway and his 'Dublin where they beat you up').
Which does raise the question of what we include in our books.
Always there's too much material. We have to make editorial choices. And we have to think about which aspects of a city our readers will want to know about, as well as which surprising aspects we can select from our gallery of writers to help us understand better a city past, present and even future.
One thing we never want to do is put our readers off from ever setting foot in their chosen city.
But that's not to say we can't make an effort to include as much as possible about what makes a world city what it is.
Cities are dynamic, febrile, ever-changing, fascinating places. It's why so many of us enjoy visiting and reading about them.
We hope that the city-pick series plays its part in bringing these amazing cities - and their writers - to as many visitors and readers as possible.
Defensive? Er, only a bit.