Submission	Feb. 27, 2026
Submission [Line Items]
Central Index Key	0001295810
Registrant Name	Sunstone Hotel Investors, Inc.
Form Type	S-3
Submission Type	S-3ASR
Fee Exhibit Type	EX-FILING FEES
Offering Table N/A
Offset Table N/A
Combined Prospectus Table N/A	N/A

Offerings	Feb. 27, 2026 USD ($)
Offering: 1
Offering:
Fee Previously Paid	false
Rule 457(r)	true
Security Type	Equity
Security Class Title	Common Stock, $0.01 par value per share
Fee Rate	0.01381%
Offering Note	An indeterminate aggregate amount of securities is being registered as may from time to time be offered for sale or sold at indeterminate prices. In reliance on Rules 456(b) and 457(r) under the Securities Act of 1933, as amended, the Registrant is deferring payment of all of the registration fees relating to the registration of securities hereby until such fees become payable in connection with an offering of such securities. An indeterminate aggregate amount of securities is being registered as may from time to time be offered for sale or sold at indeterminate prices. The Registrant is relying on Rule 456(b) and Rule 457(r) under the Securities Act of 1933, as amended, to defer payment of all registration fees. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities or that are issued in units. In connection with the securities offered hereby, the Registrant will pay "pay-as-you-go registration fees" in accordance with Rule 456(b). The Registrant will calculate the registration fee applicable to an offer of securities pursuant to this Registration Statement based on the fee payment rate in effect on the date of such fee payment.
Offering: 2
Offering:
Fee Previously Paid	false
Rule 457(r)	true
Security Type	Equity
Security Class Title	Preferred Stock, $0.01 par value per share
Fee Rate	0.01381%
Offering Note	An indeterminate aggregate amount of securities is being registered as may from time to time be offered for sale or sold at indeterminate prices. In reliance on Rules 456(b) and 457(r) under the Securities Act of 1933, as amended, the Registrant is deferring payment of all of the registration fees relating to the registration of securities hereby until such fees become payable in connection with an offering of such securities. An indeterminate aggregate amount of securities is being registered as may from time to time be offered for sale or sold at indeterminate prices. The Registrant is relying on Rule 456(b) and Rule 457(r) under the Securities Act of 1933, as amended, to defer payment of all registration fees. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities or that are issued in units. In connection with the securities offered hereby, the Registrant will pay "pay-as-you-go registration fees" in accordance with Rule 456(b). The Registrant will calculate the registration fee applicable to an offer of securities pursuant to this Registration Statement based on the fee payment rate in effect on the date of such fee payment.
Offering: 3
Offering:
Fee Previously Paid	false
Rule 457(r)	true
Security Type	Other
Security Class Title	Depositary Shares
Fee Rate	0.01381%
Amount of Registration Fee	$ 0.00
Offering Note	An indeterminate aggregate amount of securities is being registered as may from time to time be offered for sale or sold at indeterminate prices. In reliance on Rules 456(b) and 457(r) under the Securities Act of 1933, as amended, the Registrant is deferring payment of all of the registration fees relating to the registration of securities hereby until such fees become payable in connection with an offering of such securities. An indeterminate aggregate amount of securities is being registered as may from time to time be offered for sale or sold at indeterminate prices. The Registrant is relying on Rule 456(b) and Rule 457(r) under the Securities Act of 1933, as amended, to defer payment of all registration fees. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities or that are issued in units. In connection with the securities offered hereby, the Registrant will pay "pay-as-you-go registration fees" in accordance with Rule 456(b). The Registrant will calculate the registration fee applicable to an offer of securities pursuant to this Registration Statement based on the fee payment rate in effect on the date of such fee payment. Each depositary share will be issued under a deposit agreement, will represent an interest in a fractional share or multiple shares of preferred stock and will be evidenced by a depositary receipt.

Offsets - Offset: 1	Feb. 27, 2026 USD ($)
Offset Payment:
Offset Claimed	false
Rule 457(p) Offset	true
Registrant or Filer Name	Sunstone Hotel Investors, Inc.
Form or Filing Type	S-3
File Number	333-269994
Filing Date	Mar. 01, 2023
Fee Paid with Fee Offset Source	$ 33,060.00
Offset Note	The Registrant previously filed a prospectus supplement, dated March 1, 2023 to a prospectus, dated February 24, 2023, constituting part of its Registration Statement on Form S-3 (File No. 333-269994) (the "Prior Registration Statement") and paid a registration fee relating to the offer and sale of shares of its Common Stock, $0.01 par value per share (the "Common Stock") with a proposed maximum aggregate offering price of up to $300,000,000 under its then current "at-the-market" program (the "2023 ATM Program"). As of the date of this registration statement, shares of Common Stock having an aggregate offering price of up to $300,000,000 were not sold under the Prior Registration Statement. Pursuant to Rule 457(p) under the Securities Act, the registration fee of $33,060 that has already been paid and remains unused with respect to securities that were previously registered pursuant to the Prior Registration Statement and were not sold thereunder may be applied to the filing fees payable pursuant to this registration statement. The Prior Registration Statement expired on February 24, 2026.

Fees Summary	Feb. 27, 2026 USD ($)
Fees Summary [Line Items]
Total Offering	$ 0.00
Previously Paid Amount	0.00
Total Fee Amount	0.00
Total Offset Amount	0.00
Net Fee	$ 0.00