Great location, not so great apartment if you get the ground floor or have kids taller than 1.50m.
Pros: Location. Chelsea is a great neighborhood, with restaurants for all tastes, all within reach. Cons: I guess if you get an apartment in the upper floors it would be ok. Ours was on the streetside ground level, with people walking by your bedroom window at all hours, 30cm away from your bed. Speaking of beds, we are a family of four. Two boys of 14 and 20, both tall. The sofa and its second mattress tucked underneath were tiny, maybe 1.70m in length. Not really a third and fourth sleeping accommodation, unless you have small children.