We spent 7 nights at Semara in March. The hotel is new and good quality and the staff very friendly, though as always in Bali, you may need to remind them occasionally. We were ugraded to a Superior room (thank you Semara) which was large and well appointed. The bathroom was great and the bed very comfortable. There was also a large balcony with day bed. The room had free WiFi which worked fine. I would recommend the first floor Superior rooms.
Breakfasts were a good buffet but the restaurant is open and so can be hot and you get noise from the street. The pool area is compact but was not busy, perhaps because the weather was rainy. It has a separate kids pool.
The spa on site is excellent but, as you would expect, more expensive than elsewhere. However, we got a voucher each which covered most of the cost of an hours massage. We found Spa Bali in Dhyana Pura (10min/$2 by taxi) to be best for quality and value (see separate review).
They have free daily Yoga sessions in the morning which were excellent and would suit beginners as well as those with experience.
The hotel layout is long and thin based around an external 'street'. The weather was particularly wet when we were there so this meant using umbrellas to get around (provided in room). Also there isn't an undercover drop off at the reception - it was raining both when we arrived and when we left.
The location is a bit out of central Seminyak and, while there are lots of restaurants about 15min walk away, there are no footpaths and walking on the roads is not a great experience. However, taxis are cheap, it is only $1 for a kilometre or so and the security guard at the front will call one over for you. You can book taxis at the front desk but there is a minimum $2.50 charge so just walk to the front. However, we booked a Bluebird taxi to the airport and it was about $7.50 (70 000RP) the car was newish with a/c and the driver was waiting in reception for us.
Overall a good hotel and recommended.
Room Tip: Superior rooms, especially on the first floor are large and quiet.