"not worth money or effort"
we got to this hotel because my sons insisted on having a pool. That's all nice and fine, but the hotel is in the middle of absolute nowhere, it took ages for the taxi driver to find it, it is an abolute American/Standard hotels island in the middle of everyday, lower-middle class Istanbul. Nothing of special interest anywhere around, or even fairly close. The hotel itself is absolutely fine, clean, well managed, nicely arranged, etc., but the rooms we were given had their windows to the street, and the street is a busy (at time, very busy) istanbul commercial street. So it became noisy already by 7am, and the noise was such that double glazing couldn't silence. Plus, you don't really want to open the curtains, because there's absolutely no view outside. So it's basically a closed, noisy, very nice and clean and american-looking box.
The swimming pool and all health facilities are not in the same builiding, nor exculsively for hotel guests' use -- rather, they are in the middle of a very large apparently "normla" (not touristic) high-end enclave of semi-high-rises, basically, an enclosed, secured, residential area. So you need to walk out of the hotel and in between thos residential bldgs to get to the health centre and no one there knows english, nor are there towels etc.
in short, if all you're looking for in Istanbul is a medium sized, standard american/corporate hotel with pool and health facilities, this is your hotel. If not, I really do suggest you look elsewher