Staying at the S33 Hotel in Bangkok
It is in a older building that has been renovated. The soi is nicknamed "Street of the dead artists" as there are many pub's with the name of great (but dead) artists. It is also an Japanese oriented area. Location-wise I do not know if it is actually a good "family location". The rooms are all a bit different in size, so they have XS,S,M and L rooms. I did stay in an M-room and I must say the room was bigger as I thought it would be. Although the bathroom was very small and shower only. All together I think it was an very comfortable and good room.
The breakfast buffet is simple but good and the staff in the all hotel is friendly and service-minded. The hotel has parking (although the soi can be very busy in the afternoon = traffic jam). But of course the hotel has no swimming pool. See S33 Compact Hotel