Here are some dog friendly restaurants with rooms located in rural Wales.
Tyddyn Llan is a true restaurant with rooms, using only the highest quality seasonal ingredients, many of which arrive daily from local suppliers including fish caught on the Welsh coastline. Dogs are accepted by prior arrangement. There is no WiFi here. The hotel is located close to Snowdonia, with the Roman City of Chester 35 miles away. At an equal distance to the west are the Mawddach and Dyfi estuaries leading to fine sandy beaches and rocky coves. http://www.tyddynllan.co.uk
Plas Bodegroes is an established restaurant with rooms, in its own secluded grounds. It is on
the wild Llyn Peninsula, on the far north west of Wales, a mile from the seaside resort of Pwllheli, and well located for the North Wales countryside. Dogs are welcome, there is no WiFi internet access but you really will want to spend all your time in the beautiful gardens or the Welsh Hills. The rooms and the building look so good that I have included pictures of both. http://www.bodegroes.co.uk