If its a mild winter the best idea is to buy a fish tank from the pet shop , stick it in the fridge for an hour , and hey presto...ice fishing in any weather...
For exmple buzing a ticket to Rome... But to be serious as a person born and living mz whole life in Warsaw every year I dream about escaping somewhere in winter... It is extramely cold (but without much snow - just some greyish patches) or wet and windy...
Last two winters we havent got any ice at all... But usulally there was some for a few weeks in january and febuary. Th you can visti ZegrzyĆski Reserviour. I have seen there also some ice sailers but I don't know if you can hire those vechiles...