We stayed two nights on our round-trip of France, and very much enjoyed the stay. Our teenagers especially appreciated the pool, mini-gym (would need to get some free weights, though), sauna, and the billiard room.
Rooms are nicely furnished and adequate. Try to get a room looking out over the city rather than the back yard, even though that was OK too. Location is excellent if you want to explore Trouville and nearby Deauville, both walking distance, and it is very close to the many restaurants in Trouville.
Breakfast is adequate with no major surprises, but we all left full this morning despite having very different tastes in breakfast.
Finally, people in the reception were very nice and helpful, which is not always the case in France :)