The Ideal Tech Stack for a Flex Living Operator

Óscar Raynaud· Head of Living, UrbanPay9 Oct 20266 min

Flex living sits between hospitality and residential, and so does its technology. An operator might sell a two-week corporate stay, a four-month relocation and a nine-month lease in the same building, sometimes to the same resident as their plans change. Hotel software handles nights well and contracts badly. Residential software handles contracts well and nights badly. Choosing a flex living stack is mostly about deciding where on that spectrum your business sits.

This guide is for operators launching a flex living product and for operators moving off a stack that was built for something else. For the business side, see how to launch a flex living operation.

What makes a flex living stack different

Mixed stay lengths: nights, weeks and months, sometimes in the same unit.
Legal basis per stay: short-stay registration, temporary leases or residential contracts, depending on the stay. See mid-term rentals under scrutiny.
Remote arrivals: most residents book and check in without meeting anyone.
Corporate payers: employers and relocation agencies paying for staff.

1. Property management system

Option	Best for	Strengths	Watch-outs
Mews	Operators mixing short and long stays	Lets you sell long-stay, short-stay and daily-use in one PMS, with automated billing, digital guest journeys and contracts created and stored in the PMS	A hospitality-first platform, so check local residential contract requirements
Apaleo	Tech-led operators building their own stack	Open, API-first PMS used by serviced apartment brands such as limehome and numa. Reviewers rate it easier to use, with stronger support	Fewer built-in features, so you assemble more from its app marketplace
res:harmonics	Serviced apartments and coliving	Residential hospitality focus, with booking, billing and maintenance in one platform	Check fit for your markets' contract types
Homming	Spanish operators focused on stays of months	Built for medium and long-term rentals, with portal and accounting integrations	Not designed for nightly stays

My view: if more than a third of your nights come from stays under a month, start from a hospitality PMS such as Mews or Apaleo. If almost everything is monthly, a residential system will fit your contracts better.

2. Channels

Option	Strengths	Watch-outs
Your own website and booking engine	Margin, data and relationship stay with you	Needs demand generation
Short-stay platforms	Fill gaps between longer stays	Registration numbers are required on listings wherever a scheme exists, under EU Regulation 2024/1028
HousingAnywhere, Spotahome	Monthly stays booked remotely, as these platform guides describe	Commission, and a mixed audience
Corporate relocation partners	Longer, well-paid stays	Need invoicing to companies. See B2B billing in flex living

3. Revenue management

For nightly and weekly stays, dynamic pricing pays for itself. PriceLabs is widely used by aparthotels and rental operators, and Lighthouse offers revenue management and market data for hotels and apartments. For monthly stays, a clear stay-length grid usually matters more than daily price changes. See how to price rooms in coliving and flex living.

4. Identity, contracts and payments

This is where flex living wins or loses bookings, and where UrbanPay matters most. A corporate client wants a firm yes within a day, and the resident wants keys on arrival.

Approach	Strengths	Watch-outs
Card payments through the PMS or a processor	Familiar for short stays	Card fees on long stays add up, chargebacks on large prepayments, and no verification or contract in the same step
Bank transfers	Low cost for long stays	Slow, hard to match, and no confirmation before arrival
UrbanPay	Verification, contract with the right legal basis, and first payment completed remotely before arrival	Euro payments from the 19-plus European markets covered. Keep cards or another route for payers who bank elsewhere

With UrbanPay, residents are verified remotely through KYC, and corporate payers through KYB. The contract, with the stay's reason and term written in, is signed through UrbanPaySign. The first payment is collected by account-to-account transfer and reconciled to the unit. Extensions are signed as amendments. How to digitise tenant onboarding walks through the full sequence.

5. Access control

Option	Strengths	Watch-outs
Akiles	Mobile keys and offline PIN codes, used across European rentals	Mainly European focus
Salto KS	Cloud access with central real-time control across properties	Larger hardware project

Connect access to your PMS so that codes are issued automatically once verification, contract and payment are done.

6. Housekeeping, maintenance and accounting

Housekeeping and maintenance: most hospitality PMS include task management. Add a specialist only when volumes demand it.
Accounting: Odoo or Xero, or a local tool such as Holded or Pennylane, with one ledger per entity and corporate invoicing that meets local e-invoicing rules.

Recommended stacks by stage

Layer	First building	Portfolio
PMS	Mews, Apaleo or Homming, depending on stay mix	Same, with multi-property set-up
Channels	Own site plus one monthly-stay marketplace	Add corporate partners and short-stay platforms
Revenue management	Stay-length grid	PriceLabs or Lighthouse for short stays
Identity, contracts, payments	UrbanPay dashboard	UrbanPay via API and webhooks
Access	Akiles or Salto KS	Integrated with the PMS
Accounting	Odoo, Xero or local tool	One ledger per entity

How to switch stacks safely

Freeze new bookings in the old system on a fixed date, and run both in parallel until existing stays end or migrate.
Move onboarding first. Verification, contracts and first payments can move to UrbanPay independently of the PMS.
Re-check registration numbers and listings after any channel change.
Migrate corporate clients with care, confirming invoicing details and purchase order references.

FAQ

What is the best PMS for flex living?

It depends on your stay mix. Hospitality platforms such as Mews and Apaleo suit operators with many short stays, while residential platforms such as Homming suit stays of several months.

Do flex living operators need revenue management software?

For nightly and weekly stays, usually yes. For monthly stays, a clear grid by stay length often delivers more than daily price changes.

How do flex living operators onboard residents remotely?

With remote identity verification, an e-signed contract that sets out the stay's legal basis, and a first payment collected and matched before arrival.

Talk to Óscar

If you are building or rebuilding a flex living stack and want to see how verification, contract signing and collection fit with your systems, book 20 minutes with me or write directly.

Book 20 minutes with Óscar · [email protected] · Contact UrbanPay