There is a lounge on the ground floor, but it isn’t much to write about. It has an outdoor patio, but that doesn’t help much this time of year.
Cleveland has a boatload of restaurants with great food, it all depends on what you like. There are quite a few within a few minute walk of the Hilton. Check out East 4th St which is less than a 10 minute walk and has numerous restaurants, or Blue Point Grille on St. Clair or Mallorca around the corner from Blue Point. It isn’t hard to find a good restaurant in Cleveland.
The one time I stayed there, the valet took over 30 minutes to get my car, so if they appear busy, keep that in mind.