CVan someone recommend a good replacement room thermostat?

It doesn't need to be programmable, timings are set on the boiler itself, but I would like to eb able to push one button to turn the heating off for an hour, if I pop out
(ideally I'd push it again and it woudl be off for 2 hours, again for 3 hours etc)
doesn't seem a lot to ask - but can't seem to find one that dos this

thanks