We may have had the best room in the hotel, Room 213 with floor to ceiling windows overlooking the Brda River.
Twin beds were quite comfortable, though a bit narrow, and the mattresses tended to slide off the box spring.
Room was spacious and well equipped, with table, couch, chairs and desk.
There was a big party that had large speakers at high volume directed at my windows until 2 am the night before I left, which was annoying as we had to get up early to catch a train.
There were no other issues during a one week stay. This is the only 4 star hotel in Bydgoszcz. Price was reasonable, 1780 zloty for a week, about $475 USD.