We had booked a Krupthep Wing Deluxe Balcony room but where upgraded to a Krupthep Suite, a huge 85 square metres room with 2 terraces, 2 bathrooms, 2 big flat screen tvs etc.
The Krupthep Wing rooms include a butler service, which among other things provide you with free daily drinks and canapés, free pressing of 2 garments etc.
The Krupthep rooms includes complimentary breakfast and afternoon tea which is served in the breakfast restaurant. Bare in mind that there is a dress code so you might want to avoid shorts and flip-flops for breakfast and tea-service.
Two pool areas, one exclusively for Krupthep guests which I imagine can be nice during high-season, when we were there there were plently of free sunbeds at both pool areas.
No location in Bangkok is perfect as everything is a bit far, but then again taxis are extremely cheap. The Shangri La provides great view of the river, but is also conveniantly located in the middle so that you can access both the big shopping malls and the old parts of town/palace etc without too much hassle.
Overall our stay was extremely pleasant, and we will gladly return for our next visit in Bangkok.