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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryReal EstateFacility Management & CleaningSierreZana Nettoyage Mendes Mello da Silva
Zana Nettoyage Mendes Mello da Silva Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Zana Nettoyage is the provision of professional cleaning services for indoor and outdoor spaces, including end-of-lease cleaning (Nettoyage de fin de bail) and concierge services (Conciergerie) for businesses, co-ownership associations (Copropriétés) and private individuals.

AI-generated
Offering

Products & services

Industry:Facility Management & Cleaning
✓ Offered12
Regular or one-off cleaning
Regular or one-off cleaning of offices, shops, professional premises, houses and apartments, with services tailored to businesses, PPE and private individuals.
End-of-lease cleaning
End-of-lease cleaning for apartments and rental homes, intended to support a move-out or move-in.
End-of-site cleaning with clearing
End-of-site cleaning with clearing, to put the premises back in order after construction work.
Window and glass surface cleaning
Cleaning of windows and glass surfaces for private individuals and businesses.
Carpet and rug maintenance
Carpet and rug maintenance to preserve the cleanliness of textile coverings.
Fabric cleaning
Fabric cleaning, in particular for sofas, chairs and curtains.
Maintenance and disinfection of sanitary facilities
Maintenance and disinfection of sanitary facilities for clean and pleasant spaces.
Cleaning of industrial surfaces
Cleaning of industrial surfaces for premises and production areas.
Maintenance and cleaning of dining areas
Maintenance and cleaning of dining areas, tailored to the needs of catering establishments.
Cleaning services for special events
Cleaning services for special events, before, during or after the event as needed.
Facade cleaning
Facade cleaning to give the building a clean appearance again.
Condominium concierge contract
Condominium concierge contract for the regular upkeep of buildings and common areas.
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4.0/5

Zana Nettoyage Mendes Mello da Silva

Trust & reputation

ranQ Trust Score of Zana Nettoyage Mendes Mello da Silva: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Zana Nettoyage Mendes Mello da Silva scores 81.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.81.424%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.76.210%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.88.08%
Zana Nettoyage Mendes Mello da Silva scores 57.0 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.50.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Zana Nettoyage Mendes Mello da Silva scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Zana Nettoyage Mendes Mello da Silva scores 1.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Zana Nettoyage Mendes Mello da Silva reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.8 out of 5 stars from 19 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.8
of 5

Aggregated from 19 reviews across all connected sources

Sources
GGoogle4.819
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Rue du Mont-Noble 38
3960 Sierre
Opening hours
Mon
07:30 - 18:00
Tue
07:30 - 18:00
Wed
07:30 - 18:00
Thu
07:30 - 18:00
Fri
07:30 - 18:00
Sat
07:30 - 17:00
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-150.362.144
Founded
2023 · 3 years
Last commercial register change
September 29, 2025
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.67.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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