Dog friendly caravan/cottage around Cardiff

I know its a bit sad but I really want to go and visit the Dr Who experience in Cardiff in early September before I go back to uni. My mum cant have the dogs though and Im not leaving them in kennels coz Ks foot will still need watching so would like to take them with me.

Does anyone know of any cheapish dog friendly caravan parks or cottages in the Cardiff area. I dont really want to do a hotel or B and B because if we came across another dog in the hallway, stairs etc poor Ishka might have a meltdown or terrify the other guests so looking for somewhere a little isolated.

Probably a ong shot but thought id ask