Another great stay at House on Henry. Clean to a high standard, cozy, fully equipped kitchen (though I still can't figure out how the broiler (grill, in English) works).
Other guests have complained about the proximity to the expressway - this hasn't been a problem for my partner and I either of the times we've stayed here. I think you would only really notice the noise if you live on a mountain where it's always deathly quiet. Otherwise, if you live in a regular town or city, I don't think you'll have a problem. And you can always wear earplugs. We stayed in the 3rd floor suite last year, and the 2nd floor suite this year. If you are wondering which to pick, they are kind of the same. The 2nd floor has more space in the second bedroom, so this is probably the best choice if you have kids, but there is more kitchen counter space in the 3rd floor suite. I preferred some of the furniture in the 3rd floor suite, but this is just my taste.
The walk to the subway takes 10 minutes, and it's through beautiful Carroll Gardens, it is always a pleasant walk. It is a safe area, and I personally prefer it to Park Slope.
This year a couple of light bulbs didn't work when we arrived, but we emailed Annette in the morning, and it was resolved that day while we were out enjoying NY. I recommend these two suites, and would happily stay there again. The benefits are the space and hotel-standard cleanliness, at half the price you'd pay in town for a closet! I've given it 4 stars but I really mean 4 and 3/4, there just wasn't an option to do this!