Staying at the Doubletree Portland (downtown)- any breakfast recs?
The Doubletree is not in downtown Portland. Rather, it is in So. Portland near the Maine Mall.
Nearby is Cracker Barrel...chain offering "southern" style breakfast.
If don't mind driving in to downtown...lots of good choices including Hot Suppa, Marcie's, Porthole, and others that are frequently mentioned here.
Best bagels (may be subject to debate) are at Bagel Works.