Having thoroughly researched other similar hotel apartments and more premium stays at Istanbul and also having lived in this apartment for about a month, I can safely say that this is 100% worth it and probably best value.
Let's first discuss the view. My god, waking up every morning and seeing the Bosphorous Sea and the other district end of the Galata Bridge (Eminönü) is definitely my favorite thing about this apartment. You can either enjoy the view in the living room or with fresh air on the terrace.
Secondly is the location. It's right next to Şişhane metro, walking distance of Istiklal street, Galata Tower & bridge, etc. Not only that, there's a supermarket at the corner AND it's a small side street so it's generally really quiet throughout the entire day.

Third is the hotel staff. They've just been exceptional throughout my entire stay, and I'd say like 4 out of the 6 receptionist I've seen have proficient enough English to help you out with whatever problems you have. For example, special shoutout to Sadet for helping me and my girlfriend locate a pharmacy open past 9pm so that we can find allergy medication for her. Another example is them helping me place online delivery orders (a plus to be in a hotel apartment as opposed to apartment because of language gaps and not having a Turkish phone number; if you want to be self-sufficient though, pick up some basic Turkish and use yemeksepeti). Additionally, you also get complimentary cleaning service as well to whatever schedule and frequency you like.
Fourth is the internet. Yes, it's only a slow 25Mbps but that should be good enough for most needs like for work (webcam calls), video streaming, and video games. I especially want to highlight this because it's a known problem that internet isn't so great in Turkey due to historical buildings and most likely deliberate internet throttling from providers. 25Mbps is actually quite exceptional there. For instance, my girlfriend's apartment where she stayed was only getting 3-4 Mbps in comparison.
Ok, now for some caveats and things to know. Because this apartment is located at the highest floor, the general AC of the building is right on top, and it was causing a low hum in the bedroom. It was thankfully tolerable, and they've fixed the problem during my stay (again testament to excellent hotel staff service). Secondly, there were some random blackouts that happen, but they have a backup generator so this too wasn't really a problem. Lastly, don't expect much from their fitness room. Currently only contains some workout gear and a single treadmill.
In conclusion, great value for the view and location and if you ever encounter any problems, hotel staff is always available to help.