Stayed 3 nights at the Superior Twin Room and my family and I had a very good experience at Novotel Ploenchit.
Location wise, it is one of the best located hotels in Bangkok. Ploenchit BTS Station is a few steps away from the main entrance and just around the corner there is an Aeon Max Value 24-hour supermarket which we found to be so convenient to get bottled water, snacks, food especially when travelling with children.
Room size is adequate even for our family of 2 adults and 2 children age 6 and 8. They have a day bed which is great for my 8-year-old to sleep on. The bathroom is separated from the room with a clear glass wall and there is a button at the wall to put down the privacy screen.
They have a pool at the 9th floor together with a gymnasium and sauna for guests' use. Great to have a dip in the pool on a hot afternoon in Bangkok. The infinity pool overlooks the city so it's nice to swim whilst enjoying the city skyline.
Breakfast at The Square Restaurant is a full fledge affair with choices ranging from Thai noodles, various types of bread, pork stew to Chinese dimsum. And also freshly squeezed fruit juices and good coffee to finish off.
Staff from the reception to the concierge to the housekeeping and security guard are so friendly.
Overall, we would not hesitate to stay here again in our future visits to Bangkok.