Malshej is a monsoon heaven. Around 150 km from Mumbai its generally not as crowded as much hyped Lonavala (Which cannot even be remotely compared with the beauty and serenity of Malshej)
You have to avoid the easy trek routes and roadside waterfalls where legions of families will be taking bath, washing cloths (!!!) and rowdy youths drinking their Smirnoffs and Teachers, stripping to ugly underwear and dancing as if they are indeed sex-changed Lopez from Shall We Dance. We had to create our own trek route and at some stages did think of returning back due to increasing difficulties and slippery rocks without too many holds.
From photography POV, made two images with which I have started my monsoon collection. Its a major down in plans since I was planning to take a month break from work to follow the SW monsoon through Konkan, Agumbe, Valparai etc ending in Kerala !! Alasss best laid plans of men!!