Me and my father both were suppose to spend a week and 3 days in the bastion hotel, but due to unforeseen circumstances, we ended up stay a bit longer. At first we were on the first floor. The rooms from the first floor arent made for staying long periods of time especially if your not used to having a small bath room and bed, but non the less the place is quite comfortable, the staff ( who i will not mention there names for safety reason) are fantastic, they help you with what ever they can with little to as no problem, every morning they check each room and see if anyone needs anything or if the room needs clean, they is a dinner, a bar and breakfast although depending on what type of booking you have it might not be included(check expedia for those details). its easy to catch the bus 10 minutes after the hour from right across the hotel straight to the center of groningen which is a plus, especially since it is kind of a walk to reach to anything. after staying in the room, we had to upgrade due to huge amount of people booking rooms, and we were set on the fifth floor, the deluxe rooms. Now the deluxe room are more spacious especially the bathroom, with a higher sink and tub/shower. If i were to book again it would definitely be these rooms. I also forgot to mention that not everyone can walk into the hallways as well, you need a room key to get through to anything with a door in there, except the main door to the hotel and the gym door. I would stay here again