icCoventry has a news story about the latest Lonely Planet guide to the UK which criticises Coventry and it's overabundance of concrete.
The ring road comes in for some criticism and granted, it's not pretty to look at and not fun to drive on (confusing junctions where you have to pull off to stay on the ring road, mostly grade-separated junctions but with one roundabout thrown in for extra confusion). Its big advantage over other ring roads in other towns is the separation - traffic using it is kept away from traffic in the city centre.
The complaint about the concrete city centre is probably fair. The area around the fountain in the precinct is a typical ugly town centre shopping area. The tower where Smithford Way meets Corporation Street is very pedestrian unfriendly, blocking the middle of the "road".
The book deservedly praises the Cathedral and the Transport Museum. The area around the Museum (including the Whittle Arches and Lady Herbert's Garden) is how a modern city centre should look. There are still a lot of medieval buildings in the centre but they are mostly hidden away which means the first impression is of 'modern' buildings.
Heading outside the path of the old town walls, you get the two medieval streets which lead away from the city. Spon Street has been 'prettified' and should be on any tourist's itinerary. At the opposite end, Far Gosford Street is much more run down. Both are home to a wide selection of pubs and restaurants.
I'm not sure whether I'm trying to defend Coventry here. The city has been my home for nearly 3 years now, and it certainly isn't perfect. There are many plans to redevelop a lot of the uglier parts of the centre so Coventry may eventually become a city to be proud of.