We were on the Equinox last year which is the sister ship to the Solstice.
It was fabulous. She has a grass deck with many cool spots to relax. The martini bar is made of ice; we stayed in aqua class which provided unlimited access to the relaxation room and persian garden, as well as, dining at Blu every evening. She has three other specialty restaurants - Silk Garden, Tuscan Grill and Murano. We tried the Tuscan Grill and it also spectacular.
We hope to try more of Celebrity's solstice class ships in future. Our next voyage is on the Constallation. This one is the sister ship to the Summit. Another very nice ship.