My impressions of this hotel are mixed. It is generally a good 3-star hotel (but not even close to 4-star as they advertise) located in the very center of Derry and with an excellent restaurant. On the other hand, they have a weird and confusing heating/cooling system, which they centrally turn on and off whenever they decide so (probably to save money) and you don't have any control on it. The rooms are very clean but the emphasize is more on style than substance: you provide fancy robes and (basically useless) slippers, but the furniture is not very functional and sometimes awkward. I stayed in two rooms there - one was OK, but the second (named Castle) was definitely furnished by somebody who never stayed in a hotel. Everything was in the wrong places, everything was awkward and inconvenient. So if you decide to stay in this hotel, try to avoid that room.