The President Solitaire is at the far end of Soi 11 so it is near to many restaurants and other venues on Sukhumvit. If you are walking back to the hotel loaded with shopping and kids following it is a long way from the Nana BTS. (Monorail)
The rooms in the hotel are good, the breakfast is adequate and the lifts can be slow at peak times, particularly when guests are checking out.
The pool does not get much sun shine and the water can be cold. Personally I would choose the Manhattan in Soi 13. I have stayed at both.
Bangkok can be a very busy place.