We stayed 2 nights in hotel, near train (JR and private train to Shimabara) & bus station, it is very convenient.
The room is spacious with twin bed but a little bit old, however, it is good enough with basic facilities, including kettle, heater and refrigerator.....also free wifi.
There are 2 supermarkets, one is near hotel (upto 9:00pm) and another one is located at other side of station (upto 10:00 pm), and there are some restaurants near hotel.
Staff of hotel speaks little English, but they have passion to serve.
If price is lower, I think it is more attractive, around US$100 per night.