I just returned from Cannes, stayed at the PLM for a week. It is situated in the centre of the city, walking distance from the train station, beach and all shops/restaurants.
Staff were very friendly and helpful. My room was airconditioned, clean and tidy, each day it gets serviced (cleaned up and fresh towels are placed).
The double bed was super comfy!! I wanted to take it back with me to the UK :)
Only things I could probably point out were: A- the walls are so thin and I am a very light sleeper So could hear everyone outside of my room, sometimes rather inconsiderate and loud guests. B- reception only operates until 3pm, so after that you need to buzz yourself in. It just felt strange not to have any supervision or a member of staff at the hotel over night, just in case you need something, you had to go to the sister hotel located on the same street. And also sometimes it took quite long for someone to answer your call, so you are left waiting outside for a while until they let you in to the hotel.
Overall, I really enjoyed my stay at the hotel, it was just right for a short stay and location is superb.