Blog
How this project is being built.
Notes from building Lena Concierge: what was built, what was measured, and what was broken while we looked. Numbers in these posts are measurements taken on the date given, not estimates.
- Security
How guest data stays separated
One guest asks for the Wi-Fi password. Another asks for the same Wi-Fi password without ever having set foot in that apartment. What separates them is not a rule in the prompt.
Read on - Engineering
A green check that compared nothing
For weeks a check reported success without ever comparing two things. The expensive part was not the gap; it was the tick above it.
Read on - Project
What one summer built
From an empty schema to a concierge that takes a booking inside the chat, in ten weeks. The numbers, measured on 29 August 2026.
Read on