Anyway, after extensive and thorough search I got myself a very nice, according to the reviews, room in a very VFM hotel for the first 4 days of my stay... Just 12€/day, which I thing is a very good deal since its right in the center of the city and very close to the action. It has 8,6 in booking and very good comments so it cant be awful.
Its called Studio F Sukhumvit and can be found in the link below...
If anyone knows it I would apreciate a feedback.
https://www.google.com/maps/@13.739826,100.5619156,3a,75y,118.29h,96.28t/data=!3m6!1e1!3m4!1sh01lXHLNLgcEAoOl5b5A0A!2e0!7i16384!8i8192