My family of 4 (including my Wife, 10yo Son, 8yo Daughter) were on the Silver Galapagos the end of August. It's important to note that this is an "expedition" and not a "cruise". Everything was excellent. Also, while the up front cost is higher than other ships, once you realize what’s included (just about everything) and the level of service and luxury it is actually a very good value.
First, a big thanks to Sean Swedman, at Silverseas, who handled every single detail of the trip with perfection and patience. There were a lot of moving parts and Silverseas was flawless in ensuring a smooth trip. They are with you from the moment you get off the plane until the moment you board. It's really amazing.
While the ship is aging (a new one is coming in 2020) it was still luxurious and very well maintained. Cabins were nice sized with plenty of storage and very comfortable.