Stayed 4 nights as a family of three.
Good parts: Location, room cleaning services, spa/pool available.
Not so good parts: pool/spa area is rather small for a hotel that big.
Rooms are a bit dated.
Bad parts: AC was not working in February, it was hot inside, and opening a window did not help.
Overpriced breakfast - 550p/p is not worth, a mediocre selection of hot/cold meals. Within 100 meters you can find top-notch breakfast restaurants and spend less.
No EV charging available in the parking lot, and parking costs are high. Just across the street there is a public parking Celnice that costs 100czk/day less and has EV charging.
Overall, I think if you are not on a business trip and pay from your own pocket - there are better options to consider.