I would recommend it for a general audience. Miles put together a pretty breezy history of Carthage but it lacks discussion of contrary views and scholarly research. That makes it a good introduction and general history but insufficient for a serious scholar. If you want something more scholarly, I would recommend The Phoenicians and the West by Maria Aubet. Aubet is translated (and from what I recall the translation was not uniform) and isn't a good of a read for the general audience but she covers much more details about how Phoenician colonies actually worked.

It's very hard to make a good scholarly book about Carthage because we have so few primary sources on the city and the modern city makes archeology difficult. Miles gets around this issue mostly by expanding on the primary sources without being too self-reflective about it. An academic book on the same topic would have to be very reflective, in contrast.