Great to hear helosc!
Few notes:
- Praga wasn't demolished by our neighbors back ~70 years ago so you might get a REAL Warsaw feeling there. Try staying in Stalowa52 and walk around from there.
- Otwock/Karczew - you will need to do some prep work - I haven't seen help for tourists there.
- Zegrze - that's a good one, there's a boat trip there, however due to complete lack of rain over summer entire route dried out - you might want to check latest status.
If you like water - there are some river cruises (tiny boats) along historical spots (i took them several times) however I am not quite sure about English there.
have fun!
mfk