My wife, 13 year old son and I spent a very very hot noisy evening at the Hotel Senator in July, 2010. I would exercise caution before staying here.
On the whole, the Hotel is not a bad choice for Zamosc. The "for Zamosc" being the operative qualifier. It's a bit hard to be too picky when you stay in the most expensive room in a hotel and it costs only $115 a night. However, there are a number of cautions that other travelers should consider before staying here.
We had the hotel's "suite." My first quibble is that I consider a suite an accomodation with two separate rooms, divided by a door. A large room, even one with different areas, is not a suite. Our "suite" was such a single large room. The main area -- with a couch, desk and dresser, faced the Salt Square. Around the corner from the main area was a nook with a double bed. The couch turned into a bed for our son.
The bed was reasonably comfortable. The pillows were foam (no feather option). No washcloths were on offer. The hotel also uses liquid soap dispensers for the sink and the shower (where the soap doubled as shampoo).
Our bathroom had only a shower (no tub).
Unfortunately for our comfort, our stay coincided with a hot spell in Poland, with the weather in the mid-90's. The hotel does not advertise air-conditioning, and has none. So, our only option was open windows. Open windows means street noise, and we had plenty, since most of Zamosc appeared to have been present in the main square that night and many of people had to walk by our hotel, while chatting with their companions, on their way home. Others appeared to like to gather immediately below our window, and chat loudly.
Breakfast was a fairly meager selection of cheeses, meats, watermelon, juice, coffee, scrambled eggs and sausage.
On check out, the hotel automatically used the credit card "convert to dollars" feature which uses a terrible exchange rate so that you get charged in dollars, not Zloty's. I never had had that happen before (I'd always been asked previously), and so like a zombie I signed the slip. Granted, at $115 dollars, I wasn't ripped off too badly (probably $5 or $6 dollars), but this is an offensive practice.
The staff, especially housekeeping, was friendly and welcoming. English was spoken.
The hotel does have free parking in a small lot immediately behind it.
So, if the weather is cool, you could probably have a reasonable stay at the Senator. I don't think anything in Zamosc is any better, and the town is worth a day or 1/2 day if you are in the area. But, watch for the currency theft on use of credit cards, and don't expect anything fancy, just basics.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC