In reply to mrbird:
I was at Morskie Oko last year. It’s a great base for winter climbing.
it was very cold in the minus 20s, due to the ‘beast from the east’, which meant lots of unconsolidated snow and not a lot of ice. Thankfully there was hardly any wind, so the cold was bearable (just). Nonetheless there was plenty to do.
the locals told of temps usually around minus 10 and better conditions.
many routes are accessible within an hour or two. We stuck with the shorter ones because of the conditions, but there are some very long ones that look good.
the hut is a good base and inexpensive. It mainly caters for day trippers, often lots of them. They stop serving food around 6pm. I didn’t see a self catering kitchen.
I hope to go back sometime.