"We spent two nights in the Coach House in early July and found it clean and comfortable. Our room was accessible by a relatively steep and narrow set of stairs, which was fine for us but could be an issue for travelers with mobility issues or a lot of luggage. There is no air conditioning but a fan was provided (though given then outlet locations, we weren't able to position it in a very helpful location). The location of the hotel is great and we were able to walk to the bus stop to take the bus to the Pen y Pass trailhead, and then back down the Llanberis Path directly to the hotel.
Breakfast was nice and included a good selection of hot and cold items (eggs, hash browns, toast, fruit, cereal, etc.) and beverages. We enjoyed afternoon snacks, drinks and dinner in the bar area and picnic tables outside. There weren't many places open for a late lunch or early dinner in town so we spent most of our free time at the hotel.
The demographic while we were there was a bit strange - lots of elderly folks who appeared to be part of a tour group. Not sure if that's typical, but it made it feel a little like we were staying in a retirement home."