My wife and I, along with our doggo, spent 3 nights at Culag and it was everything we were looking for. We both work 40+ hrs weekly and haven't taken a break in a while, and this cozy little out-of-the-way house was a perfect escape from everything.
Two bikes and kayaks were available for use (though we unfortunately only utilized the bikes due to the water currents [we're novice kayakers]), kitchen fully stocked with cooking utensils, bathroom fully stocked with towels and all toiletries, smart TV and WiFi, perfect all-around! Great for a single couple (1 bed in bedroom) or 1-2 kids (pullout loveseat bed in living area).
Owner was very quick to respond to messages, both before we arrived and while at the house, really couldn't recommend more!
Only "negative" is personal preference, the bed was just too firm, as we both prefer softer beds.
Finally, as with any out-of-the-way properties, make sure you're prepared to lose cell service! I stupidly forgot and had to drive back to the main road to gather the entrance credentials as I had no service, totally my fault for not being prepared.
We'd definitely love to return in the future!