Sonesta Philadelphia Rittenhouse Square mailing address
To mail Sonesta Philadelphia Rittenhouse Square, send your letter to Sonesta Philadelphia Rittenhouse Square, 1800 Market Street, Philadelphia, PA 19103, USA, addressed to Guest Relations. This is the hotel on Market Street near Rittenhouse Square in Center City Philadelphia in Philadelphia, Pennsylvania. To reach someone staying there instead, put the guest's name on the first line and "c/o Sonesta Philadelphia Rittenhouse Square" above the same address — and make sure it arrives during their stay.
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Mailing address
Verified September 2026Sonesta Philadelphia Rittenhouse Square — mailing address
Guest Relations Sonesta Philadelphia Rittenhouse Square 1800 Market Street Philadelphia PA 19103 United States
General correspondence, guest relations, billing questions, and lost-and-found enquiries. To reach a guest who is currently checked in, replace "Guest Relations" with the guest's full name, keep "Sonesta Philadelphia Rittenhouse Square" on the next line, and add their arrival date so the front desk can hold the mail.
No printer, envelope, or stamp — we print and mail it the next business day.
Sources
Addresses verified September 2026 against official sources. Always confirm on the official site before time-sensitive filings.
Key facts
- Letters to the hotel go to "Guest Relations, Sonesta Philadelphia Rittenhouse Square" at 1800 Market Street, Philadelphia.
- To reach a current guest, use their name, "c/o Sonesta Philadelphia Rittenhouse Square", the same address, and their arrival date — the front desk holds it for check-in.
- A hotel can't forward mail to a guest after they check out, so time it to land during the stay.
- Great for lost-and-found claims and billing questions: a mailed letter gives you a dated paper trail.
- PostPal prints your letter and mails it to the US for you — no printer, envelope, stamps, or post office trip.
How to send your letter
- 1
Decide who the letter is for
Writing to the hotel itself — a complaint, a compliment, a billing question, or a lost-and-found claim — goes to Guest Relations. Writing to someone staying there goes to that guest, care of the hotel, and only works while they're checked in.
- 2
Address it correctly
For the hotel: first line Guest Relations, then Sonesta Philadelphia Rittenhouse Square, then 1800 Market Street, then Philadelphia PA 19103. For a guest: put the guest's full name on the first line, "c/o Sonesta Philadelphia Rittenhouse Square" on the next, the same street and city lines, and write their arrival date on the envelope so the front desk knows to hold it.
- 3
Keep it to paper, and time it
Send letters and printed documents — not cash or valuables. Mail for a guest should arrive during their stay, so post it a few days ahead; if you're not sure of the dates, call the hotel first. A hotel can't forward mail to a guest who has already checked out.
- 4
Send it without a printer
Write or upload your letter to PostPal with Sonesta Philadelphia Rittenhouse Square's address prefilled. We print it, add your return address, and mail it to the US for you — no printer, envelope, stamps, or trip to the post office.
Common questions
What is the mailing address for Sonesta Philadelphia Rittenhouse Square?
Sonesta Philadelphia Rittenhouse Square, 1800 Market Street, Philadelphia, PA 19103, USA. Address letters to the hotel to "Guest Relations, Sonesta Philadelphia Rittenhouse Square" at that address.
How do I send mail to a guest staying at Sonesta Philadelphia Rittenhouse Square?
Put the guest's full name on the first line, then "c/o Sonesta Philadelphia Rittenhouse Square", then 1800 Market Street, Philadelphia, PA 19103. Write the guest's arrival date on the envelope and post it so it arrives during their stay — the hotel holds mail at the front desk for current guests but can't forward it after checkout.
Can I mail Sonesta Philadelphia Rittenhouse Square about a lost item?
Yes. A letter to Guest Relations at the address above is a good paper trail for a lost-and-found claim — include the dates of your stay, your room number if you have it, a description of the item, and your return address so they can reach you.
Can I send Sonesta Philadelphia Rittenhouse Square a package or a gift?
PostPal sends letters and printed documents, not parcels. Many hotels will accept a package for a registered guest, but policies vary and there may be a handling fee — call the hotel before shipping anything, and never send cash.
How do I mail Sonesta Philadelphia Rittenhouse Square from Canada without a printer?
Write or upload your letter to PostPal with the address prefilled. We print it, add your return address, and send it to the US as an international letter — no printer, stamps, or post office trip needed.