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This second-floor walk-up studio/junior-one apartment at 221 West 28th Street is listed for $1,875. While certainly not big, it seems bright and clean.

SoHo and Chelsea are two of Manhattan's trendiest locales, with upscale boutiques, cutting-edge galleries and lots of tourists to boot.  Like most other 'hoods, the best apartment deals tend to be in walk-up buildings, such as four rentals that made this week's Hot Dozen--the 12 rental apartments Streeteasy.com visitors clicked on most often over the past seven days.

A studio at 221 West 28th Street (between Seventh and Eighth Aves) is listed for $1,875. It's actually a junior one-bedroom, with a foyer and lots of closet space. The apartment is on the second floor and looks bright and clean. Guarantors are permitted, and so are pets. Also, notes the listing, there is "NO BED BUG HISTORY EVER IN THE BUILDING."

Tony Fisher

You have to watch what you say to New Yorkers. Tell us we can’t do something in our apartments and we’ll do it anyway when you’re not looking, like plugging too many things into one outlet (danger: electrical fire), hanging potholders directly above the stove in our way-too-tiny kitchens (danger: regular fire) and building temporary walls without the proper egress (another fire-related danger).

But in talking to our fellow New Yorkers we've discovered some other chances people take that they later wish they had not.  Here are five things we'd like to politely urge you not to do in the comfort of your four walls.

In this $699k two-bedroom, one-bathroom co-op on the UWS, the dining area shown here can be converted into an additional bedroom, and a separate nook in the master bedroom can serve as a nursery or home office. 

Want some flexibility in your new home’s layout? This week’s Open House Scorecard--the 10 open houses those browsing StreetEasy saved to their open-house planners more often than any others this weekend--includes a group of apartments with convertible layouts.

It’s possible to convert part of the living area in this prewar $699k Upper West Side two-bedroom, one-bathroom co-op on 78th between Broadway and Amsterdam into another bedroom. Plus, the master bedroom allows for flexibility because it has a separate nook that can be used as a nursery or home office. The building is an NYSERDA certified green building with a live-in super, part-time doorman and children’s playroom. A storage bin carrying a monthly fee comes with the apartment.

This $4,100 three-bedroom has condo-style fixtures and is in the ever-hot Williamsburg neighborhood.

This $4,100 three-bedroom condo in Williamsburg's appears to have all the fixins. Plus, it's only two blocks from the Metropolitan stop on the L train.

Pros: The apartment has (condo-style) high-end fixtures, good closets and follow-to-ceiling windows. There's a private terrace (no photos though), and laundry, a common roof deck and a gym in the building.

Cons: The building doesn't have a doorman.

This rustic-looking $1.899m two-bedroom, two-bathroom co-op is a prewar loft on West 20th in Chelsea.

If you're looking to live in the classic chic Gramercy Park neighborhood, the funky/artsy chic Chelsea area, or the convenient-if-slightly-bland Kips Bay neighborhood, grab a pencil and paper and take notes, because this week’s Most Wanted (the 10 sales listings that were saved more often than any others by those surfing StreetEasy this week) features several pretty cool pads in the East and West 20s.

A full-floor $1.899m two-bedroom, two-bath co-op on West 20th between Sixth and Seventh Avenues in Chelsea (pictured) features a key-locked elevator that opens directly into the apartment.