I really liked it. The palace is, of course, more modern than the famous Topkapi, and, accordingly, with a European chic influence. But the place is beautiful, beautiful, sea views, a garden with roses. Quite a decent audio guide: you can go and look at what you like on your own. The ticket includes a couple of exhibitions on the territory - a clock and a museum of palace collections (paintings, antiques - deserve a visit). It is located in the Besiktas area, you can get there by tram T1 from Sultanahmet.
The palace impresses with the beauty of its architecture. A large well-maintained area with beautiful flower beds and trees. Located on the shore of the Bosphorus, you can take very beautiful photos against the background of the gate, to which ships with guests of the sultan or the Sultan himself docked in ancient times. The decoration of the palace is magnificent. It's a pity that photography is forbidden in the palace! By the way, when visiting the palace, audio guides are given out for free (there are in Russian!) - you will learn a lot of interesting facts.
What an amazing palace it is! Even the palace of the Russian tsar is more modest. It's just a masterpiece. The audio guide tells an interesting story and is very convenient to use. A competent route. We visited this palace at the last stage of our stay in Istanbul and were pleasantly impressed by what we saw. Topkapi is worse preserved (but it is also older). If we had visited Dolmabahce first and then Topkapi, we could have imagined the luxury of the Sultans, but we looked at them in reverse order, so Topkapi was not impressed at all.