March 2012 I have stayed 3 nights at the president solitaire. Did not book in advance, just arrived and get the "standard room" for around the price you are saying. However better to book internet via their website or agoda as you can get a discount.
About the hotel I had no problem at all, very clean, GF, very good breakfast buffet (only eat once in 4 days....haha), staff are warm and welcoming, you get a kind of tea at your check in, well nothing bad to say !
The location is great, 2 minutes from bed supperclub and Q-Bar (kind of "Hi So" clubs, the girls going there are hots and good looking, well dressed etc...). You are also 2 minutes from Climax club (just under the neighbor hotel ... I believe it was Grand President hotel)... more students and girls going there. You also have a change, ATM, great Aussie Bar opposite of the hotel (great burgers btw!), 5 minutes from Soi Cowboy, 30 sec from 7/11.
I have taken 2 FL from Climax, the 2 of thems 8/10, 3 holes. Paid 2000 for LT.
Q-bar only took one, she was 9/10 but the less performing...
I am going back in BKK in Jan 2013 and will stay in the same place for sure ! Hope it will help