If you go to golden sands and value a good nights sleep then steer well clear from party street!!! Other than that i think it has everything you could want- my boyfriend and I despite being in our 20s don't like clubs, but like live music in pubs, and found this best fulfilled by the area between the admiral and the yavor hotels, which ended up being our fave street in GS which was quieter than the rest.
Good luck choosing! My advice would be to read plenty of reviews on your hotel before you book- our hotel (the Tintyava) ended up being really noisy and in the end we had to sleep with earplugs in and the door closed which was not nice in really humid weather. Even if you don't mind basic amenities and only want a hotel as a "place to sleep", a reasonably quiet hotel is important!