Hours are very variable. Extra payment is triggered above 60Blk hrs. Last Winter (mainly because of training on CS) the hours were similar to Summer, varying from 75-95 between individual pilots. This Winter, looks like the 60 hr trigger won't be breached.
Days OFF usually 8-12 , with one Blk of 4 , the rest single/double days.
In Summer, very variable, some guys on nearly max (100) others barely making 70. The new rostering system purportedly offers ability to alter work/life-style balance. . . but. . . .
Very few layovers in HEL, that is mainly a Q400 night-stop, although that could change as it used to be Boeing, but mainly short night (Bed 24:00 wake up 04:30 from & to Riga )
This Summer there was also a small charter programme from HEL to Greece etc for some tour company, don't know if it is foreseen again for 2018.