Starry Place is an excellent little serviced apartment located on soi Rangnam, a couple blocks away from Victory Monument. It is a hidden gem, well managed and maintained with very good service. The suites are spotlessly clean, with marble floors, two bathrooms and excellent furnishings including a full sized refrigerator. Starry Place has its own restaurant which is good with fair prices and excellent room service.
The location itself is good, although it is about a 10 minute walk from BTS Victory Monument. Along the way to the BTS station, there are a couple 7-11's, a Lotus Express and a bunch of restaurants. Although it is not close to Sukhumvit, it is fairly close to Siam Ctr., the World Trade Center and Paragon. If you are looking for a quiet location for short or longer term stay, Starry Place is definitely worth a look, especially since they have weekly and monthly rates.