The garden suites are at the Boardwalk Inn; you are staying at the Boardwalk Villas, so you I don't think you would be moved from one to the other.
The garden suites are kind of like "honeymoon" suites with a king bed upstairs (?) and a little sitting area with a sofa sleeper downstairs. They have an outside entrance with a picket fence. I think they have a wet bar.
They seemed nice and quiet, kind of removed to me (we walked by them last December). So they would be nice and romantic.
If you have a one bedroom villa, you have something I love! A full kitchen and washer/dryer, king bed in the bedroom, living room, two balconies (usually), and loads of space. The villas are really great to have. I like them for my family, so we can fix simple meals and wash our clothes every day. You can't do that in a regular room (although I was so lucky - in December we stayed at the BWI and we were right next door to the laundry room - it was great!).