I think it's an average place to stay if you are looking to stay near galata tower with minimal budget. Furkan will do his best to answer any of your questions. The bathroom are little small but some people may be able to manage.
You would be paying the rent mainly for the location. But if it's your first visit to istanbul I would suggest to find a little bigger place. If you research well you will be able to find lot of places with better amenities within the same budget frame.