Long time lurker, first post.
Planning a trip to Istanbul, and am looking for a very good 4* or 5* hotel ideally with two things-a very good spa/hammam facility, and easy public transportation access. There are plenty of hotels in the $100 per night range such as the Conrad, Hilton, Marmara Taksim, but not sure which is the best bang for the buck. While I like the Conrad in particular, I have a feeling it's kind of isolated and only practical with lots of working+bus+tram rides.
I am more into sightseeing palaces, mosques, monuments than shopping/nightlife so don't find it absolutely necessary to stay in the center of things (Taksim, Istiklal) but don't want to be isolated.
Any input would be greatly appreciated.