You could sit there for needs of working and more at the lobby if needed (I assume there's a good service there) I know there are lots of indoor activities, like a swimming pool and a sports room for everyone, and also dinner bar at the top of the building. It's a good spot near a dinners courses for people like eating outside (didn't try eating dinner indoors).
The food is very good and fine for breakfast and with a good amount of variety (not sure how much vegans could have here, but if staying for just a day or two morning coffees and places in the city would be fine).
From it you could manage lots of the good places to begin in Warsaw and its attractions. The location is very good, being at the center and giving a good view of the shape and nature of the city and everything in it.
The rooms, rather than being somewhat old (and fine looking), they are good enough with the option of well made beds and very good and quick service which you could rely on. A very good hotel for come and go tourists who want to have some experience with the city of Warsaw and also for others.
