I had to go to Phnom Penh for 4 night for business meetings and I was only looking for a clean quiet room, so I decided to stay at J'adore Lodge although it had zero reviews and was a bit of a gamble.
The hotel is brand new and everything is clean. At the same time, being new, there are some things that are still in need of some improvement. The rooms don't have a minibar which would not be a problem unless you travel with medication that needs to stay cool, like me. They staff were helpful and offered to store my insulin in the kitchen fridge downstairs overnight but I thought it might not be hygienic for them or myself.
All rooms come with 80+ channels cable (~25 English channels) and WiFi.
The staff don't speak English which made the process of ordering breakfast using sign language a little amusing. Thankfully, the friendly owners are always there to translate and offer help.
The hotel is located on Koh Pich (Diamond Island) which is a favorite spot for restaurants, wedding venues and for families with children who want to visit the amusement park. The hotel is right across the river from AEON Mall. The hotel is a bit far from nightlife spots but if you are looking for a quiet hotel, this is definitely the place to visit.
As a new hotel, it would be useful keeping the hotel card as most tuk tuk drivers are not yet aware of this hotel.