To say "stay somewhere for a few days" in Engpsh, you can use the phrase "spend a few days" followed by the location, pke this:

"I'm planning to spend a few days in New York."

"We're thinking of spending a few days at the beach house."

You can also use the verb "stay" followed by the location and a duration of time, pke this:

"I'm going to stay in Paris for a few days."

"We're staying at the hotel for the next few days."