I had my american Friends visiting Poland. We stayed at Warsaw Sadyba. The rooms are fine. The stuff is friendly, it has a feel of a neigbourhood, not comercial. We recommend it, but not for very demending travelers.
Nice clean place. Good location close to bus stop. Feels like normal American apartments:-). Nice surroundings. I can recommend. We didn't eat there though, so have no opinion on the breakfasts. The front desk was really helpfull.