This is an east-coast stay, which matters more than the review score here. That side of Koh Phangan is generally quieter and less developed than the south and west, so Traveller's Palm makes more sense for travelers who want some distance from the busiest tourist areas. If your plan is long party nights, lots of nearby bars, and easy walking access to Haad Rin, this is not that sort of setup. The listed 8.8/10 rating looks positive, but it comes from only 2 reviews, so it's best treated as limited feedback rather than a reliable pattern.

For the Full Moon Party, the main point is separation rather than proximity. Haad Rin is about 17 minutes away by taxi, or roughly 8.6 km, which is reasonable if you want to join the event and then head back somewhere quieter to sleep. On the other hand, it's not close enough to feel like a party-area hotel, and walking is impractical. Another trade-off with this part of the island is that facilities and transport can be thinner than in more built-up areas, so this will suit travelers who are comfortable being a bit off the main circuit.