We used to have a lot of "short night" layovers leaving in the evening, sleeping for 3-6 hours and then returning in the morning.
Common opinion was that these were easier when you had a longer night in the hotel, i.e. 5 hours in the hotel would be easier than 3.
Under the new EASA rules the "longer" of these are no longer legal as the clock keeps ticking and you only get a 50% relief for the break time spent in a hotel.
The "short" ones with only a bit over three hours are still legal while the longer ones had to be re-rostered.
I don't fly long-haul but we got in-flight rest on some legs that did not require it before.