We had sailed Celebrity several times before and they serve our demographic (retired couple) quite well.
We wanted to cruise out of the Northeast so that we could avoid flying.
The Summit is due for a total refurb in Feb 2019, and it does need it.
Cabin space is a bit 'tight', even for an inside cabin.
But I am always amazed at the amount of storage they seem to cram into those 141 cubic feet!