Trip to Ireland & Scotland

Hii!! My boyfriend and I are going to Ireland and Scotland for the first time (23 july - 2 aug) We gonna stay for 4 days around Dublin ( no car ) and 6 days in Scotland, where we gonna rent a car.

Im looking for places to stay, but cannot find anything besides airbnb rooms in someone’s house.

Does anyone know good and CHEAP places to stay around Dublin (where we can go by train) and in Scotland (we have a car so no limit:))

We are just looking for cheap airbnbs, hotels, nice places to stay from where we can do something like hike and explore the area.

Also tips are welcome!