To be annoyed at this?

[blenditall]

DDs dad helpfully offers to come and look after his own child to 'give me a break'. He only manages about an hour before he gets bored, and during this time I run around like a headless chicken putting washing loads on, cooking lunch, hoovering - whatever needs doing. I definitely do not have a break. It pisses me off he thinks he is doing me a favour by entertaining his daughter for an hour. AIBU?

Not in the slightest!

If you don't live together why don't you sort out proper access?

If you do live together you need to have a conversation about joint parenting.

We don't live together - he is meant to see her 3 days per week but he always has something else to do. Then thinks he's a saint when he does show up. He's a twat.

Sorry 3 x per week, not 3 days.

He needs to step up and do some proper parenting. He should be taking her to his house or out somewhere during contact time and gettig the hell on with it.

Can you arrange some set days/evenings/stay overs?

YANBU

yes that is very annoying. Everything is on his terms. How infuriating.
Do something to change it soonest.

Could you go out and leave them to it when ex next comes over? That way you get a proper break. You can do housework when it's just you and your DD. I know it's hard to get things done when you have a child but I'm sure you could manage and let's face it no matter how much you do there's never enough time to get it all done so it would be better just to have a proper break.

YANBU at all. I hate it when the term 'babysitting' is used to refer to a father. Me and DS father are together and if I ever go out for a drink with a friend or go out in town shopping people always say 'Oh is DP babysitting then?'
No, he's not babysitting. He's looking after his son as his son is as much his as he is mine, he's not just doing me a favour.
Your ex needs to buck his ideas up - child care often doesn't fit in with your plans. Tough shit, he's a parent.