Tatjana Grgic
I am an architect with over 16 years of experience in architecture, interior design, green architecture, construction, and civil engineering.
My passion is creating spaces that are not only aesthetically refined but also functional, sustainable, and tailored to the people who live and work in them.
From the first idea to the final realization, I personally guide each project with creativity, technical expertise, and a keen eye for detail. For me, architecture means combining design with sustainability – shaping solutions that stand the test of time.
My goal is to create environments that inspire, bring comfort, and reflect the highest standards of quality.
Sandra Csiba
With over 10 years of experience in the Swiss financial sector and a Master’s in Banking and Finance, and CFA, Sandra Csiba serves as a strategic bridge between luxury real estate and sophisticated capital markets. From analysis and due diligence through structuring, execution, and long-term support, she personally guides real estate projects with the highest level of care and attention. By aligning property acquisitions with broader financial goals, Sandra ensures that every real estate investment is a high-performing component of a global wealth strategy.
As an Investment Manager with a background managing over CHF 10B in AuM, Sandra provides HNWIs and Family Offices with exclusive access to top-tier fixed income, public equities, and rare private market opportunities. Her clients benefit from institutional-grade entry into high-growth ventures, including private equity investments in pioneering companies such as SpaceX, Neuralink, and xAI.
Leveraging deep-rooted relationships with premier Swiss private banks, Sandra further enhances her service by facilitating seamless account openings and securing highly favorable investment conditions. This comprehensive approach ensures a holistic, "Quietly Efficient" methodology for wealth preservation and growth, allowing clients to navigate both tangible and liquid markets with absolute confidence and discretion.
About Us
Luxury Lake Zug AG – Discreet. Strategic. Results-Driven.
Who We Are:
With deep market knowledge and proven expertise, we support a discerning global clientele in identifying, securing, and optimizing premium real estate assets across Switzerland and select international destinations.
Our focus lies on Switzerland’s most exclusive regions – Zürich’s Gold Coast, Zug, Lake Lucerne, Ticino, St. Moritz, Gstaad, and the Lake Geneva area. We serve clients from the DACH region, the US, the GCC, and beyond – offering tailored strategies for second-home acquisitions, discreet off-market investments, and premium asset sales. Thanks to our strong network, negotiation expertise, and precise sense of timing, many of our transactions achieve results above market value.
Beyond real estate, we provide bespoke solutions in relocation, concierge services, technical property management, and family office advisory – always in close cooperation with trusted legal, tax, and wealth experts.
Our commitment: measurable value, delivered with discretion and precision.
“We operate with confidence – where trust is non-negotiable.”
Mladen Mladenovic
I am the Founder & CEO of
Luxury Lake Zug AG.
With a focus on exclusive real estate, technical property management, and discreet concierge services, I support high-net-worth individuals, family offices, and their trusted advisors. Known for my strategic foresight, operational precision, and absolute discretion, I deliver tailor-made solutions at the highest level—
reliably, efficiently, and personally.
What Defines My Approach
Strategic Foresight & Operational Excellence
From selecting prime properties to overseeing day-to-day management,
I employ a structured, results-driven methodology that maximizes value with minimal effort.
Absolute Discretion
Your privacy is paramount.
Whether negotiating off-market deals or coordinating personal services, every detail is handled quietly and confidentially behind the scenes.
Tailored Services & Technical Property Management
I listen closely to your unique needs and craft bespoke solutions—whether it’s an exclusive lakeside residence,
technical property management, comprehensive facility oversight, or a bespoke concierge service.
Integrity & Trust
Honesty and transparency are at the core of my entrepreneurial ethos.
You benefit from clear communication, well-informed decisions, and a partnership built on mutual respect.
“Quiet efficiency behind the scenes, clear results at the forefront.”
My Mission
To anticipate your needs, protect your assets, and create seamless
experiences—so you can focus on what matters most.
Marijana Mladenovic
As a specialist in luxury real estate with extensive, hands-on market expertise,
I empower discerning clients, investors, family offices, and entrepreneurs to identify, secure, and optimize premium properties in Switzerland and select international markets.
Comprehensive Transaction Management
From strategic asset positioning and precise valuation to discreet negotiations and successful closings,
I guide every phase of the acquisition process. My consistent record of above-market‐value deals is driven by a deep understanding of client motivations and local market dynamics.
Global, Discreet & Tailored
I serve an international clientele—from the DACH region, the United States, and the Gulf States (GCC) to other key European markets—delivering bespoke real estate solutions perfectly aligned with each client’s investment objectives, wealth strategies, and lifestyle aspirations.
Whether it’s a lakeside second home, a city trophy asset, or an exclusive
off-market opportunity, my approach is always fast, precise, and confidential.
Integrated Concierge & Advisory Services
Beyond property transactions,
I coordinate relocation logistics, premium concierge services, and cross-border advisory in close collaboration with leading legal, tax, and wealth management experts. This holistic model ensures UHNWIs, investors,
family offices, and entrepreneurs benefit from seamless, end-to-end support.
My Mission
To create measurable value for my clients through premium real estate, swift execution, and enduring trust—always upholding the highest standards of discretion and excellence.
Key Figures – At a Glance
10+
Clients from 10+ countries
Serving a global clientele across Europe, the GCC, and North America.
100%
Discreet and confidential transaction process
Every transaction is handled with absolute discretion and confidentiality.
+20%
Up to +20 % value increase
Smart presentation can boost property value by up to 20 %.
300+
Access to 300+ qualified high-end buyers
Exclusive access to a network of 300+ qualified investors and end-buyers.
