Life Sukhumvit 48 is around 600 meters from BTS Phrakhanng, according to Google Maps, and has a 7 eleven virtually right outside. As with all Life developments you have roof top pool and gardens, a lovely well equipped gym, welcoming lobby and sauna among its many facilities.
This room is on sale at a reasonable price. There are some advertised lower, but quite often you find they were sold long ago. Quick research shows the rental values for these to fluctuate hugely from mid twenties up to mid thirty thousand baht. We would suggest an investor view this as around 27/28K per month realistically.