[Hehe]

It depends on what you plan to do for the trip.

In our case, we wanted to just spend some time to enjoy a city. We spent 10 days in Provence region in two separate places (6days in 2 AirBNB and another 4 in hotel) and really just avoided most of the tourist place. We went to local bars and met with locals with my broken French. Then spent the day time touring the restaurants or spots that they recommended and often just spent hours relaxing. For example, there was this little coffee shop that a older gentleman highly recommended me: "you people from America would know what a good coffee is once you try that place". And it was really really great. We spent an entire afternoon there just drinking 2 different coffee each and reading/browsing on iPad.

If that's something you have in mind, it's easy... pick up a city (ideally small-medium sized with some spot worth visiting nearby, our case was the lavender Route) and just go ..

If you like to visit the most amount of tourist spots, then I'd suggest using an agent as well. They can often plan it better.