Phnom Penh:
Spend 3 days in Phnom Penh, and what I liked the most, compare to the other Asian towns is the traffic. Not too crazy!!
For sure, the President’s Palace is a must to visit. But the best is to have dinner/drink in a rooftop bar/restaurant, especially facing the river.

Kampot:
Capital of bio-Pepper. A visit at the plantation, with a “pepper degustation” is nice. Learned a lot about Pepper…..
Riding a scooter (as I did for 3 weeks) is very easy, no traffic and people drive/ride slowly, so very safe, compared to Vietnam or Indonesia…..
There is not much to see in the town, but, a lot to see around in 1hr radius scooter ride:
Bokor Mountain / Kayaking in the mangrove / Pepper Plantation / Kep fish market / the different waterfalls….

Phnom Penh:
As I wrote above, the meals were good, but not so cheap compared to Malaysia.
Had a sunset cruise in Phnom Penh, was OK…. not so much to see….
Silk Island is a total waste to my opinion, just to see a few women making silk carpets…..

Kampot:
Nice little town, but not much to do/see…
And like Phnom Penh, meals are not so cheap, unless eating “street food”