Hi Leony,
Firstly, all the very best wishes for 2016. When you put together such a trip for everyone, it can only be going well for you and your business.
We enjoyed every day. The apartment at The Waterfront was absolutely top-notch; we couldn't have asked for anything better. All the guesthouses were superb, although we found 'The Pottingshed house' the least appealing, but that's a personal preference. There was nothing to fault in terms of cleanliness, rooms, etc., at any of the guesthouses. Swellendam was fantastic, as was, for example, Sweet Olive, which was very different again, but again, this all comes down to personal taste.
Customs went perfectly and the outward and return journey was also fine. All in all, we thoroughly enjoyed our 14 days.
Recommendations are all it is: book or advise for Dutch people who are going to drive themselves a car with an automatic transmission, even if it will be a bit more expensive. With that gearstick on the left, it doesn't make driving any easier. And as far as we're concerned, we would have liked to have stayed in a guesthouse for more than one night, as that is so much quieter.
For example, Stanford is really a place you can use as a base for a lot of things, especially if you have a car. We could have easily spent 2 days in Hermanus too. Anyway, no criticism, just recommendations.
Actually, everything was great.
Thank you very much on behalf of my entire family,
Rene
Dutch 
English