I know the Aston, that's where I am staying when going to Ambon. It's still 40 minutes car ride from the city and 1 hour ride from Laha muck sites. On the other hand they will be located very closely to the south coast sites like Hukurila caves. Their location makes it ideal to cater diving for Lease island group (Nusa Laut, Saparua, Molana), though it will be quite uneasy for Ambon Bay.
I had heard of a new dive centre opening end of 2013, I was wondering who'd manage the centre. It seems the managers are the previous managers of KBR in Lembeh, who btw are serious photographers. That's the good news.
The less good news is that the 200$ package they propose are all inclusive at the Aston, which is just a nightmare when it comes to food and service. The Hotel is supposed to be a 4* the best in Ambon but to be honest each time I am going there I am prepared to voice and shout 2 or 3 times before I can get anything I want.
In the end, I always rent a driver in order to drive me to BRD in the morning or go out for dinner downtown. It's a pity that a 4* hotel is not able to cater acceptable food while Molucca is probably the best area in Indonesia for dining. Ask once for grilled fish with colo colo, smoked tuna, eggplant in Kenari almond sauce, take a special coffee at Joas with fried breadfruit and you'll understand what I mean.
Apparenetly they have a boat docked quite near to the hotel in the bay, so the car time is minimised. How long do you recon it would take to get from the end of the bay to Laha by boat?
I read up on the Aston on Trip Advisor and there are many reviews that match exactly what you say about food and service at the hotel. 4* price 2* service is what someone said.
Maybe the owners will be able to shake the Hotel into shape. Here's hoping for their sake.
It is very well situated to the blue water South Coast dives, and they would be silly not to offer day trips out to Molana or Nusa Laut.