It's just around the corner from BTS Ratchathewi, which is very convenient. Size of a boutique hotel but the rooms could pass for a 4 star hotel - they are quite spacious and the furniture still new and clean.
Don't expect to get much swimming done here though, because even if you're not disturbed by the fact that it's right in front of the entrance and a poolside bar, you might get bored within minutes as the pool is VERY small. Having said that, the pool wasn't a major issue for us because we spent most of our time shopping and wouldn't have time to swim even if we wanted to.
Something else that I liked about Siam Swana is the small roadside stall along the way to the BTS station that sells cheap yet awesome fried banana fritters - great as a quick snack on our way to the city or back to the hotel.More