This is Castle Street, in Criccieth. It's a terrace house. You can see the sea from the garden.
It sleeps four people. Two bedrooms, one bathroom. It's got a 4 Star rating. It's clean and comfortable. It feels quite solid. You can bring one dog. There is a cot and a highchair.
The beach is about two minutes walk down the hill. It's very close. Children and dogs need watching near the road.
The castle is right there in the town, you can't miss it. There's a shop, a pub and places to eat about fifty yards away. They're useful.
A bit further out, you can get the Ffestiniog Railway from Porthmadog. That goes up into Snowdonia. Portmeirion is also near Porthmadog, it's unusual. You can drive to the big castles like Caernarfon and Harlech. Snowdon itself is about a forty minute drive.
Inside, there's a washing machine, a TV, and WiFi. Bedding and towels are included. The shower is over the bath.
Useful links for planning: Snowdonia National Park and Visit Wales.