It's true that Lodz city is a craphole but the DT is really wonderful. I would say perfect. No expense has been spared in maintaining brand standards. Perhaps the best breakfast of any Polish Hilton. I would go as far to say that DT Lodz may be my most favourite Polish Hilton, only Wroclaw could rival that.
Rooftop pool is great, and has a swimming machine,-I think thats the right word as it doesn't make proper waves. So you can swim in situ despite the small size of the pool.
F&B is excellent.
For one night, you could take the train, which are all new, enjoy the hospitality and then head back to Warsaw well-rested.