Kep is close to Kampot and people usually stay in one of these places and visit the other one for a day trip. There is National Park with a very bad road so it's better to have a long walk from the entrance rather than a scooter ride. Kep, unlike Kampot, has a beach which is nice, there are barely any waves and is pleasant to relax there. If sun is too much there's an alley of trees just behind where locals come for picnic and meetups. Many food stalls around from noon till the evening, in the morning it's rather quiet and empty. National Park, guesthouses, markets and beach are scattered around the town.
Stay at the International is stellar. The surrounding area is filled with beautiful lands and picturesque streets. The night life is rolling for what is just the start of high season. Love it all!