Neuadd Wen Cottages is a farm just outside Llanfachraeth, near the estuary. Porthdy Crey R Wen is the one at the end, a detached static caravan on its own bit of ground.
It sleeps four. Two bedrooms, one shower room. The rating is 3 Star, so it's comfortable and everything works, but don't expect anything fancy. It's open plan inside, so it's all one living space. You get a good view out over the fields to the water.
The track down to the estuary is right there. You can walk it in a few minutes. It's part of the Anglesey Coastal Path, so you can set off from the door. The nearest proper sandy beach is about a mile away, at Llanfachraeth.
There's a shop and a pub half a mile up the road in the village. For a meal out, you'll need to drive a few miles.
You can bring dogs, up to three. There's parking for you right outside. Bedding and towels are included. There's a TV and WiFi. There's a washing machine too.
For things to do, Beaumaris with its castle is about twenty minutes' drive. The National Trust looks after a few spots along the coast here. For the mountains, you can be in Snowdonia in less than half an hour.