I am loathe to leave bad reviews, but as we rely on traveller reviews, I feel I should make others aware of our experience, and let them then make their own decision.
We booked a single night prior to joining friends on a week-long Gulet trip. When we arrived at the hotel, there was nobody there to check us in, and we put this down to the hotel being pretty much closed at the season's end. Our room was 'cosy' but the shower room was a disaster; no water pressure, and the aircon (essential) was ineffective. We decided to struggle through for one night and found a very nice restaurant just 100m away (possibly the only decent restaurant in Gümbet); Annalivia, and enjoyed a nice meal. But the rest of the night was blighted by the noise from a local nightclub. Unfortunately, we had booked another 2 nights on our return, and the experience was so bad, we simply booked another hotel near the marina and left. The area around the hotel (Gümbet) is dirty and poor quality, and lacking in good restaurants. It would appear to cater for cheap all-inclusives and clubbers, and those visiting for 'Turkey-teeth'. OK if that's what you want, but not for us, and certainly not how the area is described. The hotel shows it's age and,say, I can't recommend it.
As a general comment on where to stay in Bodrum, I would not recommend Gumbet. Stay near the marina. Cleaner, quieter, better hotels, and much better restaurants.