As Medewi bay retreat is out of town, how do you suggest to commute for all sight seeing?
The hotel you are looking at is a timeshare hotel and is in an area generally known for surfing, or for isolated retreats, not for sightseeing.
If you look on a map of Bali either on Google maps or google earth, you will see where it is located relative to other places. You should ask the hotel for help in transport as it's very far to any sightseeing, and there is much less transport options in that area. Or, if you choose to, there are many other hotels in other areas around Bali.