We stayed in Hotel Krolewski during quite a blizzard last February in Gdansk. Although it's a little out of the way, it is definitely a walkable distance to the rest of the Old Town - even with all of the snow. There are even a few places to stop along the way, including the Brovarnia Brewery located in Hotel Gdansk.
The hotel service was exceptional, every staff member was very polite and helpful. The rooms were comfortable and we had a great view of the river and old town from our 3rd story room. I highly recommend eating in the restaurant as well, they had great food! I would definitely stay here again if I end up back in Gdansk.
- Krolewski Hotel Gdansk
