Having stayed previously in Somerset Roppongi, I must say that SAE is a much better upgrade in terms of new quality furnishings, charming location, beautiful view of lush greenery and the Tokyo Tower (very magical at night with the Tower all lit up) and there's a washing machine in your room instead of having to go to the basement. Nice pool and gym too.
However, my biggest complaint about my SAE one bedroom premier apartment is that the bedroom door is a louvred sliding door. This means that we could not get total privacy because light and sound from the living room penetrates easily into the bedroom. This made it very difficult for us to switch on the lights or even watch TV at night because we have a young child who needs to sleep by 8pm. And we had with us my teenage niece who facebooked late till midnight. So we had to sleep with the keyboard sounds clicking nonstop and the flickering light of the computer screen.
Our friend booked the studio unit which is cheaper and almost identical in space and layout. However, instead of the sliding louvred doors, they had a curtain door to separate the living room from the bedroom which we would rather prefer (at least it could block out the lights from the living room). But since they are located on a lower floor, they do not have such a great view.
And I would advise you to ask the hotel to email you a directional map to the hotel and you would need the hotel name and address in Japanese. We have taken taxis many times to SAE and almost all of them do not know how to get tthere.
Generally the staff is friendly and helpful.After we left, we got an email from the hotel telling us that they found some of our belongings. But I suspect that's the kind of service you get in almost all Japanese hotels. One disappointment though we had with the staff was when we asked them for good restaurants nearby and they keep telling us to go to Roppongi. We actually found a delightful Korean BBQ restaurant serving the yummiest wagyu beef just opposite SAE.
Somerset Roppongi has a much better location in terms of restaurants, shops and near the subway station serving the more popular destinations. Its living room is much more spacious and it has proper bedrooms with proper doors that can shut out light and noise from the living room. But the apartment looked tired, there's hardly any facilities, no washing room in the apartment (you have to go to the basement)....
Overall, I would choose to stay with either Somerset apartment - the space is such luxury...
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC