I've stayed at Seulawah several times. There's a swimming pool, but because it's located high up and cool, the water is quite chilly.
The staff was very helpful when I made a complaint. However, it's a shame that the sheets and pillowcases weren't very clean; they might be time for a replacement, as the stains looked old. The wardrobe furniture is also old-fashioned, but the chairs are very comfortable. It's a shame there are only two pillows, and they're very thin. It might be time for a replacement, especially in the superior rooms, which should offer a better experience.
I lost something (my fault, not the staff's), and the staff helped me find it, even though it took me a few days to realize it. The service is indeed good.
By the way, the location is up a steep incline, so be careful if you're driving less inclined. But the location is nice, away from the noise.