Generally clean and comfortable. Nice bed, nice bathroom, nice restaurant downstairs, and a very friendly staff. No noise complaints, but I stayed out in the city until about midnight each day. It was missing a few standards that make me think it shouldn't be a 4-star hotel. No coffee maker or kettle in the room. Also, no tissue paper, no bathrobe, slippers, or other basics that you would find in a 4-star hotel. BUT I would call it a HIGH 3 star hotel.
All of these missing items weren't a big deal. My main complaint was the air quality in the room. The windows don't open, and the fan/AC unit can be loud and disruptive during sleep. Since you're relying on the AC for fresh air, the air in the room sometimes seemed stagnant and humid. Simply being able to open a window would make a big difference.
The neighborhood is a bit quiet and 3 or 4 stops from the center. Not too far from the center, but a bit far to walk, and definitely in a residential, suburban area. Luckily, there is a tram stop right outside.
Don't expect any late-night food options nearby. However, it's difficult to find late night food in the entire city.
In all, there are a few drawbacks, but I would recommend the hotel, and I would consider staying again.