As first-time cruisers we weren't sure what to expect, or how a small ship like Astor compares with a 4,000 passenger monster. We were attracted by the bargain rate of $900 for two people for five nights. If the cruise had cost two or three times as much our post-voyage opinions might have been sterner.
The ship was excellently maintained and operated. If there were grumpy crew members we didn't see them. I suspect that reviewers who harshly criticise crew are types who like confrontation and making complaints.
The interior cabin was small but as described on the website. The only failing was an erratic vacuum toilet that sometimes left solid and liquid offerings unflushed, then later whisked them away at a time of its own choosing.
Compact and windowless but thoughtfully designed and excellently maintained.