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Island Square
35 photos
  • Pet friendly
  • On-site Parking
  • Studio–2 bed
Total price ($3,911) mo $3,631 mo

Island Square

2758 78th Avenue Southeast, Mercer Island, WA 98040
(253) 553-2728
www.islandsquareapts.com
Island Square
SummaryProperty locationPricing and availabilityAmenitiesProperty detailsContact

Your offers

3 offers

$150 Cash Back

From Sunny · paid after move-in·

Guaranteed

7% price drop

Was $3,778 · saves $280/mo

In the price

1 month free on select units

Advertised by property

est. $1,702 Verify with property

Your first-month savings

$430 Locked in + $1,702 Possible

Restrictions may apply

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Property location

2758 78th Avenue Southeast, Mercer Island, WA 98040

Pricing and availability

Last updated 6 minutes ago
  • A1ND3
    • 1 bed
    • ·
      1 bath
    • ·
      809 sqft
    $2,648+ mo
    1
    Starting at
    Unit available

    • Unit B-304

      Apply now

      Avail 10/3/2026

      12 months lease
      $2,781 mo
  • A1SD3
    • 1 bed
    • ·
      1 bath
    • ·
      889 sqft
    $2,648+ mo
    1
    Starting at
    Unit available

    • Unit D-508

      Apply now

      Available now

      12 months lease
      $2,781 mo
  • A1OD2
    • 1 bed
    • ·
      1 bath
    • ·
      810 sqft
    $2,497+ mo
    1
    Starting at
    Unit available

    • Unit B-206

      Apply now

      Available now

      12 months lease
      $2,630 mo
  • A1B
    • 1 bed
    • ·
      1 bath
    • ·
      637 sqft
    $2,383+ mo
    2
    Starting at
    Units available

    • Unit C-304

      New unit
      Apply now

      Avail 10/5/2026

      12 months lease
      $2,601 mo

    • Unit C-204

      New unit
      Apply now

      Available now

      12 months lease
      $2,516 mo
  • A1OD
    • 1 bed
    • ·
      1 bath
    • ·
      810 sqft
    $2,919+ mo
    2
    Starting at
    Units available

    • Unit C-208

      New unit
      Apply now

      Avail 10/4/2026

      12 months lease
      $3,052 mo

    • Unit A-210

      New unit
      Apply now

      Avail 11/7/2026

      12 months lease
      $3,098 mo
  • A1HD
    • 1 bed
    • ·
      1 bath
    • ·
      741 sqft
    $2,388+ mo
    1
    Starting at
    Unit available

    • Unit D-313

      Apply now

      Available now

      12 months lease
      $2,521 mo

Amenities

  • In unit laundry
  • Patio / balcony
  • Pet friendly
  • Garage
  • Recently renovated
  • Stainless steel

Property details

Island Square offers renovated studio, one-, and two-bedroom apartment homes in the heart of Mercer Island. Updated interiors feature Swiss elm cabinetry, quartz countertops, stainless steel appliances, brushed nickel fixtures, and wood plank flooring. Spacious floor plans include modern appliances and large windows that create a bright, inviting atmosphere. Residents enjoy a 24-hour fitness center and a new clubhouse with coworking spaces, conference rooms, lounge seating, and a podcast room. With convenient access to Light Rail, shopping, dining, and outdoor recreation, Island Square connects you to the best of Mercer Island living.

Pets allowed
Yes
Pet limit
2
Pet restrictions
Akita, Alaskan Malamute, Chow-Chow, Doberman, German Shepherd, Great Dane, Pit Bull (American Staffordshire Terrier, American Pit Bull Terrier, Staffordshire Bull Terrier), Rottweiler, Saint Bernard, Shar Pei, and Siberian Husky.
Pet fee
500
Pet rent
75

When each offer lands

At signing

Property special applied

Any move-in special the property is running comes off what you owe them, handled by the property at lease signing.

At move-in

Cash Back unlocked

Once your move-in is confirmed, your Sunny Cash Back offer becomes available in your account.

Within 60 days

Cash Back paid to you

Claim it through Venmo or a Gift Card. Renters have 60 days from move-in to claim — no property approval needed.

Contact the property

(253) 553-2728
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Love it
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