This will be a good scenario for a relative beginner, or someone that just wants to learn the basics of city design without too many worries. For the mid- to expert level player there is probably no special thrill to this map.
Quite a bit of money is provided at the start and at the first "borrowing" (10,000dn each time), and the land is essentially flat with a river for trade and some hills for mining. It has a northern location, so fires arent a problem, and before you say "Yeah, but theres no wheat bonus either", Rome supplies all of your food. The good part about Rome supplying the food is that a beginner can concentrate on city design without worrying about granaries and farms. The bad part is that Rome only supplies one food type, so anyone wanting to develop housing to the villa level will be unable. (This is also good for the beginner, as there will be no problems associated with loss of workers to patrician housing evolution.)
There is a considerable amount of trading that can be done, and there is very minor military activity. The demands made by Caesar are also limited, which can actually make maintaining Favor difficult in the long run, as the only way to increase this statistic is through gifts. Speaking of statistics, the overall levels that need to be reached are low, basically 20s and 25s. The most difficult part is reaching the total population level of 8,000.
I hate to give an overall rating of a "2", because I think that for the right level person, this map is probably a great exercise in city building. However, for any experienced player, the challenges are minimal. Then again, it may feel good to the experienced governor to play on a map that you can absolutely crush, especially after playing a few hard ones. In that case, have a ball!