Samudrawasa was the perfect place for our extended family vacation. The standard of the house itself is exquisite, beautifully renovated to a genuine colonial feeling, and the rooms fully met our need for 7 grownups and 4 kids ranging 5-13 years old. The private pool is a real treat (and the A/C also very welcome).
The staff is also lovely; so friendly and helpful in every way. They prepared breakfast every morning, and dinner/lunch at demand, all really great food. As there are very few other opportunities in Ambalangoda, this is a good option if you don't want to go to Hikkaduwa - a bigger town just 15-20 min away by tuk-tuk, which Kingsley is happy to provide. Hikkaduwa is bustling with beach bars and restaurants (but also with touts and noise, very different from Ambalangoda). Kingsley and his men can also help with day trips and excursions to other parts of Sri Lanka.
Ambalangoda itself is a small, local town with few tourist facilities, but an absolutely gorgeous beach just 50 m from the house. Quite a high surf there at times, but most days, both the young and the older had a great time swimming and playing. Only for good swimmers, though.
On the beach, there's a fairly new beach bar called Chill Pill, which all-in-all is a great asset also for Samudrawasa. We highly recommend at least one dinner there in the sand, we had the best sea platter ever there at Xmas eve (but bring your chill, everything takes time in Sri Lanka in general, and in Chill Pill especially). The music can be a little loud some evenings from the house, but generally not a problem from the rooms.
The internet connection was very variable in our days there, claiming to be a problem for the town rather than the house, but be aware if you plan to bring your work with you.
All in all, I hardly think we could have found a better place to spend our Xmas holiday. Samudrawasa and it's staff comes highly recommended from us in Norway.