a.
1.
Thankful, obliged, indebted, beholden, under obligation.
2.
Agreeable, pleasing, pleasant, gratifying, acceptable, satisfying, satisfactory, delightful, welcome, charming.
3.
Delicious, palatable, savory, nice, luscious, cordial, refreshing, invigorating.
4.
Soothing, comforting, alleviating.